SmartTechnology solutions for business

Free tools by Smart

Free tools that get the job done in your browser

Text, images, PDF, calculators and documents. Pick a tool and start straight away; your files stay on your device.

  • 260 tools ready
  • Free, no account
  • Runs in your browser

Text

29 tools View category

Number to Words: Write an Amount in Words

Type an amount in digits to get it in Arabic or English words, with the currency name, its fraction and a closing “only”.

Wrong Keyboard Language Fixer: Arabic ↔ English

Typed with the keyboard on the wrong language? Paste the text to get it back in Arabic or English without retyping.

Remove Arabic Diacritics: Arabic Text Cleaner

Remove diacritics, tatweel and extra spaces from any Arabic text, and unify alef and yeh forms if you want.

Arabic Numeral Converter: ١٢٣ to 123 and Back

Convert between 123, ١٢٣ and ۱۲۳ inside any text. Words and separators stay as they are unless you choose otherwise.

Word and Character Counter

Count the words, characters, sentences and paragraphs in any text, with reading and speaking time.

Compare Two Texts (Diff Checker)

Paste two versions of a text to see the added and removed words or lines, highlighted.

Text Cleaner: Remove Extra Spaces

Remove extra spaces and blank lines, and rejoin lines broken in text copied from a PDF or an email.

Sort a List and Remove Duplicates

Sort the lines of a list alphabetically or numerically, and remove repeated lines or see how often each repeats.

Invisible Character Detector and Remover

Reveal hidden characters in text, such as zero-width spaces and direction marks, and remove the ones you choose.

Find and Replace Text

Replace one word or several phrases in a text in one go, then copy or download the new text.

Extract Emails, Links and Numbers from Text

Paste any text to get lists of the email addresses, links and numbers in it, without repeats.

Compare Two Lists: Shared and Different Items

Paste two lists to see which items are in both and which are in only one of them.

Split Text into Parts

Split text by characters, words, or paragraphs, optionally keeping sentence boundaries.

Merge Texts and Lists

Join texts with separators, headings, or numbering, and copy each part or the whole result.

Change Letter Case

Convert English text between upper, lower, title, camel, snake, and kebab case.

Markdown Editor and HTML Preview

Write Markdown with a safe preview, Arabic text, and tables, then export Markdown or HTML.

Convert HTML to Plain Text

Extract text from pasted HTML, optionally keeping headings, lists, and links.

Create a Markdown Table

Build a table from pasted data and export Markdown, HTML, or TSV.

Count Repeated Words

Show repeated words and phrases and skip stop words. It does not score SEO quality.

Format a Plain-Text Email

Rewrap lines and format lists and quotes for a readable plain-text email.

Arabic Virtual Keyboard

Type Arabic with a mouse or touch when no Arabic keyboard is available, then copy or download it.

Manual Arabic Diacritics Editor

Add diacritics to the selected letter. It is an editor, not automatic vocalization.

Arabic Placeholder Text Generator

Generate Arabic paragraphs, headings, and lists from a fixed library for design tests.

Arabic Punctuation Formatter

Normalize Arabic commas, question marks, brackets, and surrounding spaces with rules you choose.

Arabic Name Transliteration

Suggest an editable Latin spelling from a stated table. It is not an official document spelling.

Arabic Text Encoding Repair

Read a text file as UTF-8 or Windows-1256 and preview the choice before export.

Citation Formatter

Fill source details and format them in a stated citation style. It does not verify the source exists.

SRT and VTT Subtitle Editor

Show cues, edit times, shift timing, or convert between SRT and VTT.

Text Template and Variable Editor

Fill a message from variables such as name and company, and generate results from a local table.

Images

18 tools View category

Image Compressor

Reduce the file size of JPG, PNG and WebP images, up to 8 at a time, and compare before and after. Nothing is uploaded.

Resize and Crop an Image

Change an image’s width and height in pixels or by percentage, crop, rotate or flip it, then download it as JPG, PNG or WebP.

Image Converter: JPG, PNG, WebP

Convert images between JPG, PNG and WebP, up to 8 at a time, with a quality setting and a background colour in place of transparency.

Compress Image to a Target Size in KB

Reduce an image to under 50, 100 or 200 KB, or any size you enter, with optional maximum dimensions for forms and portals.

Remove EXIF Data and Location from Photos

See the GPS location and EXIF data hidden in a photo, then download a clean copy with the picture quality untouched.

Annotate Images: Text, Arrows and Numbers

Write on a picture or screenshot, add arrows, numbers and rectangles to point things out, then download it.

Favicon Generator

Turn your logo into a favicon.ico and PNG icons in every size, with a manifest file and ready HTML lines.

Image Information Viewer

Show format, dimensions, size, transparency, and available EXIF without uploading the file.

Image Watermark Generator

Place Arabic text or a logo, tiled or once, with opacity and position you choose.

Image Privacy Redaction

Cover regions you select with a solid color and export a redacted image.

Image Merger and Collage Maker

Make a long image or a grid, with spacing, background, and order controls.

Image Splitter

Cut an image into a grid or slices at set dimensions and download the parts together.

EXIF Image Orientation Fixer

Fix photos whose display orientation differs between apps and save a copy with a fixed orientation.

Basic Image Adjustments

Adjust brightness, contrast, and saturation, or convert to gray, with a before-and-after preview.

Thumbnail Template Generator

Create an article or video image from a photo, a title, and fixed Arabic or English templates.

Photo Print Sheet Maker

Arrange copies of a photo on A4 at sizes you enter, with optional margins and crop marks.

Image Comparison

View two images side by side or with a slider, and compare dimensions and size. It is a visual check, not an authenticity verdict.

SVG to Image Converter

Preview a sanitized local SVG, then export PNG or WebP at dimensions you choose.

PDF

16 tools View category

Merge PDF Files

Choose PDF files, put them in order and download one merged PDF. Free, with nothing uploaded.

Split PDF and Extract Pages

Pull chosen pages into a new PDF or split the file into several. Free, with nothing uploaded.

Images to PDF

Turn JPG and PNG images into one PDF, one image per page. Free, with nothing uploaded.

Reorder, Rotate and Delete PDF Pages

Reorder, delete, rotate or duplicate the pages of a PDF, then download a new file. Free, with nothing uploaded.

PDF Pages to Images

Export selected pages to PNG or JPG at a chosen resolution, with a page limit.

PDF Page Numbering

Add page numbers, a date, or a prefix in positions you choose, with an optional cover exception.

PDF Watermark

Place text or an image on selected pages, with opacity, angle, and size controls.

PDF Header and Footer

Add a company name, title, or reference, with a preview that avoids covering important content.

PDF Information Viewer

Show page count, page sizes, metadata, and properties that can be read locally.

PDF Cover and Divider Pages

Generate a cover and divider pages with Arabic or English titles and merge them into the file.

Multiple PDF Pages per Sheet

Place several reduced pages on one sheet, or repeat a page, to use fewer sheets.

PDF Text Extractor

Extract text that already exists in the file. It does not read scanned images or guarantee table order.

PDF Form Filler

Read supported form fields, fill them, and download the copy, with the supported field types stated.

Visual PDF Signature

Draw a signature or place its image at a chosen position. It is visual, not a digital certificate.

PDF Form Flattening

Turn supported form fields into fixed content. It does not prevent every later edit of the file.

Scanned PDF Size Reducer

Rebuild scanned pages at a lower resolution and quality. Searchable text may be lost, and not every file shrinks.

Design

19 tools View category

Colour Contrast Checker

Enter a text colour and a background colour to see the contrast ratio and whether it passes the WCAG levels.

HEX, RGB and HSL Colour Converter

Type a colour in any format or pick one, then copy it as HEX, RGB or HSL.

Print Size and DPI Calculator

Convert a print size between millimetres, centimetres, inches and pixels at the DPI you set.

Aspect Ratio Calculator

Find the aspect ratio of an image or video, or work out a missing width or height from a ratio such as 16:9.

Image Color Picker

Pick a color from a point in a local image and show prominent colors from it.

Color Palette Generator

Build coordinated palettes from a base color, with export formats for design and code.

Gradient Generator

Build a linear or radial gradient, control stops and direction, then copy CSS or download an image.

Light and Dark Theme Color Preview

Try brand colors on a card, buttons, and fields in both themes, with contrast indicators.

Arabic and English Font Preview

Compare licensed or local fonts on headings, paragraphs, and numbers before choosing one.

Print Bleed and Margin Calculator

Calculate the final design size with bleed and safety margins you set for print.

CSS Shadow and Border Generator

Preview a shadow, rounded corners, and a border, then export the values as one snippet.

CSS Grid and Flexbox Generator

Set rows, columns, alignment, and gaps visually, then copy a small HTML and CSS example.

Fluid Typography Calculator

Calculate heading and paragraph scales and CSS clamp values between two screen widths.

SVG Pattern Generator

Create dots, grids, lines, and geometric shapes you can recolor and download.

Print Sheet Layout Calculator

Calculate how many cards or labels fit on a sheet, with margins and gaps.

Visual Asset Requirements Checker

Compare an image or logo with width, height, and transparency requirements you provide.

Placeholder Image Generator

Create placeholder images at a size, color, and label you set for page tests.

Arabic Font Coverage Checker

Check a local font for Arabic letters, digits, and diacritics, with a display sample.

Brand Colors and Fonts Reference Sheet

Enter colors, fonts, and a logo to produce a printable brand reference sheet.

Business

30 tools View category

Free Invoice Generator

Fill in an invoice with items, discount and tax, then print it or save it as a PDF. It is a printable document, not a registered e-invoice.

Free Quotation Generator

Fill in a quotation with items, a validity date and payment terms, then print it or save it as a PDF for your customer.

Payment Receipt Generator

Enter the payer, the amount and what it is for, and get a receipt with the amount in digits and words, ready to print or save as a PDF.

Delivery Note Generator

Create an item list with quantities and signature spaces for a delivery.

Purchase Order Generator

Generate a purchase order from items, quantities, dates, and terms you enter.

Expense Voucher Generator

Prepare an expense voucher with an amount, reason, text references, and approval space.

Customer Statement Generator

Enter charges and payments locally to produce a balance statement. It is not an accounting system.

Business Letter Templates

Fill fixed templates such as a quote request or payment follow-up, and edit the whole letter.

Internal Memo Generator

Prepare a memo with a title, sender, recipients, action points, and a date.

Printable Business Card Maker

Fill details and a logo into a small set of Arabic or bilingual card templates.

Event Badge Generator

Create badges from typed names or a local CSV, with a paper and badge size you set.

Attendance Certificate Generator

Fill a certificate from a name, course, and date, including a small batch from a local table.

Product and Address Label Maker

Arrange names, prices, addresses, or codes on a label sheet at dimensions you choose.

Envelope Address Printer

Place sender and recipient details on common envelope sizes, with a position preview.

Inventory Count Sheet Generator

Create a count sheet with names, codes, expected quantity, actual quantity, and the difference.

Return Note Generator

Prepare a note of returned items, quantities, reasons, and the original reference, without posting accounts.

One Page Work Report

Turn details you enter into a one-page status or weekly report from a fixed template.

Statement of Work Summary

Fill the goal, outputs, limits, duration, and acceptance criteria in a printable template.

Attendance and Work Hours Calculator

Enter clock-in, clock-out, and breaks, including overnight shifts, and calculate net hours.

Decimal Hours Converter

Convert between 7:30 and 7.5 hours in both directions, including a list and its total.

Printable Shift Planner

Assign names to weekly or monthly shifts manually, and flag overlaps from rules you enter.

Small Team Leave Planner

Record planned leave locally and show overlap and availability, without a leave-system integration.

Custom Overtime Pay Calculator

Calculate overtime from a multiplier and hourly pay you enter. No legal rate is assumed.

Job Offer Comparison

Compare salary, allowances, benefits, and commute costs on a monthly and yearly basis.

Employee Turnover Calculator

Calculate the rate from starting staff, ending staff, and leavers, with the definition shown.

Weighted Evaluation Calculator

Enter criteria, weights, and scores, calculate the result, and check that the weights add up.

Team Skills Matrix

Enter skill levels, compare them with a target, and export the training gaps.

Employee Onboarding Checklist

Choose and edit onboarding tasks, with an owner and a deadline for each task.

Candidate Criteria Comparison

Score a small group manually against stated criteria and weights, without a prediction or hiring decision.

Small Organization Chart Builder

Enter names, roles, and manager links to produce a printable chart or image, without sharing team data.

Calculators

36 tools View category

Unit Converter

Convert length, weight, area, volume, temperature, speed and more. The result appears as you type.

VAT Calculator

Add VAT to an amount, or take it out of a tax-inclusive amount, at the rate you enter.

Profit Margin Calculator

Work out profit margin and markup, or find the selling price or the cost from a percentage you know.

Discount Calculator

Find the price after a discount and what you save, or work back to the discount rate or the original price.

Percentage Calculator

Find a percentage of a number, what percentage one number is of another, or the percentage change between two values.

Product Pricing Calculator

Add purchase, shipping, packaging, and fee costs to reach a target price and estimated margin.

Break-Even Calculator

Estimate the units or revenue needed to cover fixed and variable costs you enter.

Payment Processing Fee Calculator

Calculate fees, net received, or the amount to charge from a rate and fixed fee you enter.

ROI Calculator

Calculate simple return from a cost and a gain, showing what was treated as profit or revenue.

ROAS Calculator

Calculate attributed revenue against ad spend, with an optional margin.

Customer Acquisition Cost Calculator

Divide an acquisition cost you enter by the number of new customers in a stated period.

Average Order Value Calculator

Calculate average order value from revenue and order count, and compare two periods.

Successive Discount Calculator

Apply several discounts in order and show the effective discount instead of adding the rates.

Interest Free Payment Schedule

Split a total into a down payment and installments, putting the rounding difference on the last payment.

Subscription Cost Calculator

Add monthly and yearly subscriptions and show one monthly and yearly cost.

Weighted Amount Splitter

Split an amount equally, by weights, or by percentages, and distribute rounding differences.

Supplier Quote Comparison

Compare quotes that differ in unit, quantity, discount, and shipping on one cost basis.

Work Time Cost Calculator

Turn hours, an hourly cost, and extra expenses into an estimated task cost.

Manual Exchange Rate Calculator

Convert currency at a rate you type, with direction and commission, without live rates.

Data Size Converter

Convert bits, bytes, kB, and KiB, and distinguish decimal from binary units.

File Transfer Time Calculator

Estimate upload or download time from file size, connection speed, and an efficiency factor.

Screen PPI Calculator

Calculate pixel density and screen size from resolution and diagonal, and compare two screens.

Paper Size Comparison

Compare A, B, Letter, Legal, and custom sizes, and see whether they fit for printing.

Scale Drawing Calculator

Convert a real measurement and a drawing measurement at a scale, with consistent units.

Area and Volume Calculator

Calculate area, perimeter, and volume of common shapes from measurements you enter.

Fraction and Ratio Calculator

Add, subtract, multiply, divide, and simplify fractions, or convert them to a ratio or decimal.

Number List Statistics

Show sum, mean, median, mode, and spread for a list of numbers, with the method used.

Proportion Calculator

Solve a direct or inverse proportion from three values and show the relationship and units.

Rounding and Significant Figures

Round a number or a list by decimal places or significant figures, and state the rule.

Random Name Picker and Group Generator

Pick names at random or assign groups. It is not a certified official draw.

Unit Price Comparison

Normalize package weight or volume and price to compare the unit cost.

Trip Fuel Cost Calculator

Estimate fuel and cost from distance, consumption, and a price per litre, with an optional split.

Appliance Energy Cost Calculator

Estimate kilowatt-hours and cost from appliance power, hours, and a tariff you enter.

Shipping Volumetric Weight Calculator

Calculate volumetric weight from dimensions and a divisor, and compare it with actual weight.

Simple Customer Lifetime Value Calculator

Estimate customer value from average purchase, frequency, duration, and margin, showing the assumptions.

Currency Converter with Published Rates

Use cached periodic data from a suitable provider, and show the source, update time, and usage limits.

Data

20 tools View category

CSV File Viewer

Open a CSV file as a table you can search and sort. Free, with nothing uploaded.

Remove Duplicate Rows

Paste a table or a list to get the rows without duplicates and a count of what was removed. Free, with nothing uploaded.

Phone Number Cleaner and Formatter

Paste a list of phone numbers to get them in one international format, without spaces or repeats. Free, with nothing uploaded.

CSV Cleaner

Remove empty rows, trim spaces, and normalize headings, with a preview of the changes.

CSV File Merger

Combine files with compatible columns and handle different order and headings before download.

CSV File Comparison

Show new, removed, and changed records using a key you choose.

CSV File Splitter

Split a file by row count or by a column value such as city or category.

CSV and JSON Converter

Convert either way, map columns, and choose how nested values are handled.

CSV and TSV Converter

Change delimiters, quotes, and line endings while keeping values that contain separators.

Table Column Reshaping

Choose, rename, and reorder columns, or transpose rows and columns within a limited range.

Email Address List Cleaner

Trim spaces and find duplicates and shape errors. It does not prove an address exists or can be delivered.

Table Join by Key

Add columns from one table to another by a shared column, and show unmatched rows.

XLSX Sheet to CSV

Read XLSX sheets locally and export one sheet as values. Macros are not run and formulas are not guaranteed.

CSV to XLSX

Produce a spreadsheet with column names and types you review, and stop text from being treated as formulas.

Table Date Format Normalizer

Read stated date formats, convert them to one format, and ask you to resolve ambiguous values such as 03/04.

Table Data Masking

Replace selected columns with masked values or local identifiers before sharing a copy.

Data Quality Report

Count blanks, duplicates, type distribution, and outliers using rules you set.

Small Table Statistics and Charts

Choose numeric and category columns to show a sum, average, distribution, and a downloadable chart.

Import Template Mapper

Map file columns to a required template, check required fields, and export the prepared file.

Sample Data Generator

Create fictional names, addresses, identifiers, and values from limited schemas for interface tests.

Developers

24 tools View category

JSON Formatter and Validator

Paste JSON to format or minify it, and see exactly where an error is, by line and column, with the reason.

JSON Comparison

Show differences in values, keys, and arrays, with options to ignore order or specific fields.

YAML and JSON Converter

Convert between the two formats, restrict unsafe types, and explain formatting that is not preserved.

SQL Formatter

Format a query for a dialect you choose, with highlighting. It does not connect to a database or run the query.

Base64 Encoder and Decoder

Encode or decode a text or small file as Base64, with UTF-8 and input validation.

URL Encoder and Decoder

Encode or decode URL parts, and distinguish path encoding from query encoding.

HTML Entity Encoder and Decoder

Convert between characters and the entities used inside HTML.

URL Parser

Split a URL into protocol, host, path, parameters, and fragment, and report structural errors.

Query String Builder

Add, edit, and encode link parameters, and choose how repeated values are represented.

HTTP Request Code Builder

Set a method, headers, and body, then generate curl and fetch examples. It does not send the request.

ENV to JSON Converter

Read setting pairs and export them, keeping text values and explaining ENV format differences.

ENV Key Comparison

Find missing, extra, and duplicate keys between two files, with values hidden by default.

CSS Unit Converter

Convert px, rem, em, and vw using a font size and container size you set.

String Escape Converter

Show or generate escape sequences for text and Unicode, for an output language you choose.

Number Base Converter

Convert binary, decimal, hexadecimal, and other bases, including large integers.

Gitignore Generator

Choose languages, frameworks, and tools from stated templates and produce an editable ignore file.

JSON Schema Validator

Test a JSON document against a schema you provide and show the fields that do not match, locally.

JSONPath Explorer

Try JSONPath queries on a local document and extract results, with no API connection.

XML and JSON Converter

Convert structure with options for attributes and repeated values. It does not promise identical conversion for every XML file.

Regex Tester

Try a pattern on text and show matches and groups in a separate worker you can stop.

Cron Generator and Preview

Build a cron expression and preview the next runs for a stated dialect and zone, without scheduling anything.

HTML CSS and JavaScript Formatter

Format pasted code locally and show parse errors, without running JavaScript or loading resources.

Web File Minifier

Minify HTML, CSS, and JavaScript with reviewed libraries and show the savings, without executing the code.

TypeScript Interfaces from JSON

Infer a draft of types from a JSON sample, and state that it depends on the sample and needs review.

Marketing

16 tools View category

QR Code Generator

Create a free QR code for a link, text, Wi-Fi network or contact and download it as PNG or SVG. The code is static and never expires.

WhatsApp Link Generator

Type a phone number and an optional ready-made message, then copy a wa.me link that opens the chat without saving the number.

Email Signature Generator

Enter your name, job title and contact details, then copy a formatted signature to paste straight into Gmail or Outlook.

QR Code Reader

Read a code locally and show its contents before opening anything. The camera is requested only when used.

UTM Link Builder

Add campaign parameters to a link and copy the result, with consistent naming rules.

vCard Contact File Generator

Generate a VCF contact file with a person, company, and links, without hosting a page.

Campaign Naming Builder

Build a campaign name from platform, country, goal, and date, with a template saved locally.

Campaign URL Analyzer

Read UTM links, flag missing parameters or inconsistent names, and export a short report.

Open Graph Image Generator

Produce a sharing image from a title, logo, color, and a fixed template, including Arabic.

Advertising Metrics Calculator

Calculate CTR, CPC, CPM, CPA, and conversion rate from numbers you enter, with each metric defined.

Campaign Budget Goal Calculator

Estimate clicks and customers from a budget, cost per click, and an assumed conversion, with scenarios.

Exportable Content Calendar

Enter ideas, platforms, and dates in a local calendar, then export CSV or print it. Nothing is published.

Simple Customer Journey Map

Fill journey stages, touchpoints, problems, and actions on one printable board.

Campaign Results Comparison

Enter spend, impressions, clicks, and conversions for two periods and show the change, without ad accounts.

Barcode Generator

Generate supported barcode formats, check lengths and check digits, and state commercial-use limits.

Simple AB Test Calculator

Compare conversion rates with a stated statistical model and show sample size and assumptions, without a business promise.

SEO

16 tools View category

Search Snippet Preview

Enter a title, description, and URL for an approximate phone and desktop preview. It is not a guarantee of Google’s display.

Social Meta Tag Generator

Prepare sharing tags from a form and copy HTML, with a check of the basic fields.

Robots TXT Generator

Build crawler rules from a form, explain each rule, and preview the file before download.

XML Sitemap Generator

Turn a list of URLs you provide into XML. It does not crawl the site.

Local Sitemap Validator

Check XML, links, duplicates, and dates from a local file, without claiming the URLs work.

URL Slug Generator

Turn a title into an Arabic or Latin slug, with separator and letter rules and manual editing.

URL List Structure Checker

Find duplicate URLs, case differences, trailing slashes, and query differences without a network request.

Page Performance Budget Calculator

Add image, font, and script sizes and compare them with a size budget. It does not measure Core Web Vitals.

Robots TXT Rule Tester

Paste a robots file and paths to test allow and disallow with a stated rule engine, without fetching the site.

Hreflang Generator

Build language and region links and x-default from a page table, and check reciprocity in the data you entered.

Schema JSON LD Generator

Prepare Organization, Article, and Product examples and export structured data you can review.

Structured Data Code Checker

Extract pasted JSON-LD and check structure and fields against stated rules. It does not guarantee rich-result eligibility.

SEO Analysis from Pasted HTML

Analyze title, description, canonical, headings, links, and images in HTML you paste. It does not fetch the site.

URL Redirect Mapping Planner

Turn old and new URLs into a redirect map or a draft of Apache rules you can review.

Local Internal Link Consistency Checker

Compare links extracted from local HTML with a known page list and find references missing from that list.

Website Content Map Planner

Arrange pages, topics, search intents, and main links in a local table to see overlap and gaps.

Time

14 tools View category

Date Difference Calculator

Show the difference in days, weeks, or months, including whether the end day counts.

Add and Subtract from Date

Find a date after days, weeks, or months, and explain end-of-month handling.

Age and Next Anniversary Calculator

Calculate age from a birth date and the next anniversary, without storing personal data.

Business Days Calculator

Count business days between dates using a weekend and holidays you enter.

Meeting Agenda Time Planner

Allocate a meeting across items and breaks, and show each item’s start and end.

Meeting Minutes Template

Fill attendance, items, decisions, and owners in an Arabic or English template, then print it.

Meeting Decision Follow Up Tracker

Track an owner, date, and status for each decision locally, then export a follow-up file.

Unix Timestamp Converter

Convert a Unix time and a readable date, in seconds or milliseconds, with a time zone.

Pomodoro Focus Timer

Run local work and break cycles, and explain the limits of a background tab.

Stopwatch and Countdown Timer

Measure a duration or show time remaining. It is not a guaranteed alert after the page closes.

Hijri and Gregorian Date Converter

Convert with a stated supported calendar, and explain possible differences from an official moon-sighting announcement.

Time Zone Converter

Compare one moment between cities using the available time-zone and daylight-saving data.

Multi Time Zone Meeting Planner

Show the overlap of working hours participants set, without sending invitations.

ICS Calendar Event Generator

Generate an event file with a title, time, zone, place, and reminder. Import and sending stay with you.

Security & Network

22 tools View category

Strong Password Generator

Generate a strong random password or an easy-to-remember passphrase with the length and character types you choose, and copy it in one click.

File Checksum Calculator and Comparison

Calculate SHA-256 or another supported digest and compare it with a fingerprint you paste.

Text Hash and HMAC Calculator

Hash text or calculate an HMAC with a key you enter locally. A hash is not reversible encryption.

JWT Reader

Decode the header and payload and show dates. Reading a token does not prove its signature.

Unix Chmod Permission Calculator

Convert values such as 0755 and read, write, and execute permissions, including symbolic form.

IP Address Format Converter

Convert numeric IPv4 forms and expand or compress IPv6, and check the format locally.

MAC Address Formatter

Normalize a MAC address and check its structure, without claiming to identify a device or owner.

International Domain Name Converter

Convert an Arabic or international domain and Punycode, and preview the name and encoding.

Local Password Strength Checker

Assess patterns in a password locally with guidance, without sending it or claiming a breach check.

Local X509 Certificate Reader

Show issuer, names, and validity from a public certificate you open. It does not by itself verify a live trust chain.

CSP Policy Builder

Choose content sources and produce a Content-Security-Policy draft and explanation, without claiming the copy is sufficient security.

Sensitive Log Data Redactor

Find common email, token, and key patterns and replace them for manual review. It does not guarantee every secret is found.

CORS Configuration Explainer

Paste headers and set an origin and method to explain likely allow or deny outcomes, without sending requests.

CIDR Subnet Calculator

Calculate an IPv4 or IPv6 range, network size, and addresses from clear definitions, without a connection.

SPF Record Explainer

Explain SPF mechanisms and syntax without branching lookups. It does not claim to simulate every DNS lookup.

DMARC Record Explainer

Explain a DMARC policy and tags and check the syntax, without changing DNS or analyzing incoming mail.

DNS Lookup

Show records for a domain from a chosen DNS provider, with cache, timeout, and limits. It is not a broad scan.

Domain Registration RDAP Lookup

Show the registrar, dates, and public statuses. Owner details may be redacted.

HTTP Header Checker

Fetch a limited public HTTPS response and show the status and headers, under strict request controls.

URL Redirect Checker

Show a limited redirect chain for a public link and explain the statuses.

TLS Certificate Checker

Show a public host certificate and its expiry, within what the hosting environment can do.

Domain Email DNS Checker

Read MX, SPF, DMARC, and DKIM names you provide. It is a configuration report, not a delivery guarantee.