All 182 tools
Every tool, grouped by what it does. The ones marked On your device run in your browser and never upload your file.
640 pages · free · no signup
Calculators · Finance
Compound Interest & SIP Calculator
Grow a lump sum, a monthly contribution, or both — with the compounding stated.
On your deviceEMI & Loan Calculator
Work out a loan instalment, the total interest, and the full month-by-month schedule.
On your deviceGST & VAT Calculator
Add tax to a price or pull it back out of a tax-inclusive one, with the CGST/SGST split.
On your devicePercentage Calculator
Every percentage question, including the two that are always confused with each other.
On your deviceData · Format
CSV to JSON
Convert CSV data into JSON, with headers as keys.
On your deviceJSON Formatter & Validator
Format, validate and minify JSON, with the exact position of any error.
On your deviceJSON to CSV
Flatten a JSON array into CSV you can open in a spreadsheet.
On your deviceExcel to JSON
Turn a spreadsheet into JSON or CSV, in your browser.
On your deviceCSV to Excel
Turn a CSV or TSV into a formatted .xlsx without Excel eating your leading zeros, mangling anything date-shaped or rewriting long numbers.
On your deviceExcel to CSV
Pull a sheet out of an .xlsx as CSV or TSV, with the separator, line endings and encoding you actually need.
On your deviceIBAN Validator
Check an IBAN's checksum and length and see the bank and account parts — before a payment goes to the wrong place.
On your deviceJSON Diff
Compare two JSON documents by their DATA, not their text — so reformatting and reordered keys are not reported as changes.
On your deviceRoman Numeral Converter
Convert numbers to Roman numerals and back, in the strict subtractive form that is actually correct.
On your deviceXML to JSON
Convert XML to JSON and back, with explicit control over attributes and over the repeated-element problem that makes every other converter lossy.
On your deviceYAML to JSON
Convert YAML to JSON and back, with multi-document files, anchors and the type surprises that cause real configuration bugs.
On your deviceDeveloper
JWT Decoder
Decode a JSON Web Token and read its header, claims and expiry.
On your deviceUnix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
On your deviceHTML, CSS & JS Minifier
Shrink CSS and JavaScript with a real parser, not a find-and-replace.
On your deviceMarkdown to HTML
Convert Markdown into HTML, or HTML back into Markdown.
On your deviceNumber Base Converter
Convert between decimal, binary, octal and hexadecimal.
On your deviceRegex Tester
Test a regular expression against your text and see every match highlighted.
On your deviceSQL Formatter
Format a SQL query so you can actually read it.
On your deviceBasic Auth Generator
Build an HTTP Basic Authorization header, a .htpasswd line or a curl command from a username and password.
On your devicechmod Calculator
Convert between 755, rwxr-xr-x and the chmod command — including setuid and the sticky bit.
On your deviceCron Expression Parser
Explain a cron expression in plain English and show exactly when it will next run.
On your deviceULID Generator
Generate sortable, timestamped identifiers — and decode the time back out of one.
On your deviceDeveloper · Web
HTTP Status Codes
Every HTTP status code with what it means, when to use it, and the ones that are routinely used wrongly.
On your deviceMIME Type Lookup
Find the MIME type for a file extension, or what extensions a type covers — and why the same file gets a different type on a different machine.
On your deviceURL Parser
Break a URL into its parts, decode the query string, and see what is actually in it — including the tracking parameters.
On your deviceForms · Exam & government
Add Name & Date to Photo
Print your name and the date of the photograph onto a passport photo, as exam boards require.
On your deviceChange Image DPI
Set the resolution tag a print shop or a form reads, without touching the pixels.
On your deviceExam Photo & Signature Resizer
Resize a photo or signature to the exact pixel and KB rules an exam portal demands.
Handwritten Declaration Formatter
Straighten, whiten and resize a photographed handwritten declaration to 800x400 px and 50-100 KB.
Passport Photo Print Sheet
Tile one ID photo across a 4x6, 5x7 or A4 sheet with cut guides, ready to print.
On your devicePostcard Size Photo Maker
Make the 4x6 inch postcard photograph NEET asks for, with your name and date on it.
On your deviceGenerator
Password Generator
Generate strong random passwords in your browser.
On your deviceQR Code Generator
Turn a link, text or Wi-Fi details into a QR code you can download.
On your deviceUUID Generator
Generate version 4 UUIDs using your browser's cryptographic randomness.
On your deviceBarcode Generator
Make Code 128, EAN-13, UPC-A, Code 39, ITF-14 and Codabar barcodes as PNG or print-ready SVG, with the check digit worked out for you.
On your deviceGIF · Convert
GIF to MP4
Convert an animated GIF to MP4 — typically a tenth of the size.
Video to GIF
Turn a short clip into an animated GIF.
GIF to Animated WebP
Convert an animation to WebP — usually a third of the size, with full colour.
GIF to APNG
Convert an animation to APNG — full colour and true transparency, no 256-colour limit.
GIF Frame Extractor
Pull every frame out of an animated GIF as a numbered PNG, with its real delay.
GIF Maker
Turn a set of images into one animated GIF, with the frame rate and size you choose.
Image · AI
Image · Create
Collage Maker
Arrange several photos into a grid with even spacing.
On your deviceMeme Generator
Classic top and bottom caption on any picture.
On your devicePhoto Joiner
Stitch photos side by side, stacked, or in a row — before-and-after style.
On your deviceScreenshot Beautifier
Put a screenshot on a backdrop with padding, rounded corners and a real shadow — sized exactly for the place you are posting it.
On your deviceImage · Edit
Crop Image
Cut an image down to the region you want.
On your deviceResize Image
Change an image's dimensions — fit, fill, exact or by percentage.
On your deviceRotate & Flip Image
Turn an image the right way up, or mirror it.
On your deviceAdd a Border
Frame a photo with a solid colour, or a blurred copy of itself.
On your deviceAdd Text to Image
Put a caption, title or label onto a photo.
On your deviceBlur or Pixelate an Area
Hide a face, a licence plate or an address before you share a photo.
On your deviceCircle Crop
Crop a photo to a circle or rounded square, with a transparent background.
On your deviceSplit Image into a Grid
Cut one picture into equal tiles — an Instagram grid or a panorama.
On your deviceWatermark Image
Stamp text or a logo across your photos — one or a whole batch.
On your deviceImage · Enhance
Photo Filters & Adjustments
Brightness, contrast, saturation, warmth and a vignette — plus one-click looks.
On your deviceSharpen an Image
Bring back crispness in a slightly soft photo, without the gritty halos.
Enlarge an Image
Make an image bigger while keeping the edges clean, with optional noise clean-up.
Image · Optimize
Image · Optimize · Exact size
Compress Image to Exact Size
Get a photo under a KB limit — for a form, an exam portal or an upload cap.
On your devicePassport Size Photo Maker
Make a passport or exam photo at the exact size and file limit required.
Signature Resizer
Resize a scanned signature to the dimensions and KB limit a form demands.
Increase Image File Size
Pad a photo up to a minimum file size, for forms that demand one.
On your deviceImage · Utility
Image to Base64
Turn an image into a data URI you can paste straight into CSS or HTML.
On your deviceRemove Image Metadata
Strip EXIF, GPS location and camera details before you share a photo.
On your deviceView Image Metadata
See the EXIF data hidden in a photo — camera, date and GPS location.
On your deviceImage Colour Palette
Pull the dominant colours out of a photo, with hex codes to copy.
On your deviceCompare Two Images
Highlight every pixel that differs between two pictures.
On your deviceMedia · Convert
Media · Edit
Add Audio to Video
Put a music track or voiceover onto a video.
Change Video Speed
Speed a video up or slow it down, keeping the audio in step.
Change Video Volume
Turn a video's audio up or down.
Crop Video
Cut the frame down — remove black bars or change the aspect ratio.
Merge Videos
Join several videos into one, in the order you choose.
Mute Video
Strip the audio track out of a video.
Resize Video
Change a video's resolution.
Rotate & Flip Video
Turn a sideways video the right way up, or mirror it.
Trim Audio
Cut a section out of an audio file — for a ringtone or a clip.
Trim Video
Cut a section out of a video without re-encoding it.
Media · Optimize
Media · Optimize · Exact size
PDF · Convert from
Extract Images from PDF
Pull out every picture embedded in a PDF at its original quality.
PDF to Excel
Pull the tables out of a PDF into a spreadsheet you can edit.
PDF to JPG
Turn every page of a PDF into an image.
On your devicePDF to Text
Pull the text out of a PDF.
On your devicePDF to Word
Convert a PDF into an editable Word document.
PDF to Markdown
Convert a PDF into clean Markdown with real headings, lists and tables — the format for feeding a document to an AI model or a static site.
PDF · Convert to
Excel to PDF
Turn a spreadsheet into a PDF.
Images to PDF
Turn photos or scans into a single PDF, one image per page.
On your devicePowerPoint to PDF
Convert slides to a PDF you can share anywhere.
Word to PDF
Convert a Word document to PDF, keeping the layout intact.
Webpage to PDF
Save any web page as a PDF.
PDF · Edit
Crop PDF
Trim the margins off a PDF's pages.
Add Page Numbers to PDF
Number the pages of a PDF, in the position and style you want.
Watermark PDF
Stamp text across every page — DRAFT, CONFIDENTIAL, or your own wording.
Compare PDFs
Find what changed between two versions of a document.
Edit PDF Metadata
Change or strip a PDF's title, author, subject and keywords.
Flatten PDF
Lock form fields and annotations into the page so nothing can be edited.
Add Header & Footer to PDF
Stamp text along the top or bottom of every page.
Pages per Sheet
Print several PDF pages onto one sheet — 2-up, 4-up or more.
Change PDF Page Size
Convert a PDF between A4, Letter, A3, A5 and other standard page sizes.
PDF Information
See a PDF's page count, size, metadata, encryption and fonts.
Bates Numbering
Apply sequential legal-style stamps like ABC-000001 to every page.
Fill a PDF Form
List a PDF's form fields, fill them in, and flatten so the values show everywhere.
Sign a PDF
Place a signature image or typed text anywhere on a PDF page.
Flip PDF Pages
Mirror pages horizontally or vertically.
PDF Booklet
Reorder pages for folded booklet printing.
PDF · Optimize
Compress PDF
Make a PDF smaller while keeping it readable.
Grayscale PDF
Turn a colour PDF black and white — smaller files and cheaper printing.
OCR PDF
Make a scanned PDF searchable, without changing how it looks.
Repair PDF
Rebuild a damaged PDF that will not open.
Remove Images from PDF
Strip every picture out, keeping only the text.
PDF · Optimize · Exact size
PDF · Organize
Extract PDF Pages
Pull selected pages out into a new PDF.
On your deviceMerge PDF
Combine several PDFs into one, in the order you choose.
On your deviceOrganize PDF
Reorder pages into any sequence you like.
On your deviceDelete PDF Pages
Remove the pages you don't want and download the rest.
On your deviceRotate PDF
Turn pages the right way up and save them that way.
On your deviceSplit PDF
Split a PDF into separate files by page range.
On your deviceAlternate & Mix PDF
Interleave two PDFs — the fix for scanning double-sided pages in two passes.
Insert Pages into PDF
Add blank pages, or pages from another PDF, at any position.
Split Pages in Half
Cut each page down the middle into two separate pages — the fix for a scanned book where every page holds two.
PDF · Security
Protect PDF
Add a password so only the right people can open your PDF.
Unlock PDF
Remove a password you already know, so the PDF opens without one.
Check a Redacted PDF
Find out whether a PDF's blacked-out text is really gone, or still readable underneath.
Redact PDF
Permanently remove text from a PDF — not a black box drawn over it.
Security & crypto
File Hash & Checksum Verifier
Check a downloaded file against its published checksum — MD5, SHA-1, SHA-256 or CRC32.
On your deviceHMAC Generator
Sign a message with a secret key using HMAC-SHA256 and friends, without the key leaving your browser.
On your deviceTOTP Code Generator
Turn a two-factor secret into the current six-digit code, entirely in your browser.
On your deviceText
Case Converter
Switch text between sentence case, title case, camelCase, snake_case and more.
On your deviceSlug Generator
Turn a title into a clean, URL-safe slug.
On your deviceText Diff Checker
Compare two blocks of text and see exactly what changed.
On your deviceWord Counter
Count words, characters, sentences and reading time as you type.
On your deviceEmail Normalizer
Reduce email addresses to a canonical form so you can spot the ones that are the same mailbox wearing a different hat.
On your deviceList Tools
Sort, de-duplicate, trim, number, prefix, wrap and reverse a list of lines — the twenty seconds of text editing nobody wants to open an editor for.
On your deviceText · Encoding
Base64 Encoder & Decoder
Encode text to Base64 or decode it back.
On your deviceHash Generator
Generate SHA-256, SHA-384, SHA-512 or SHA-1 hashes of text.
On your deviceURL Encoder & Decoder
Percent-encode text for URLs, or decode it back to readable form.
On your deviceHTML Entity Encoder
Encode text so it is safe inside HTML, or decode entities back to characters — with the four that actually matter called out.
On your deviceText to Binary
Convert text to binary, hex, octal or decimal and back — with the character encoding made explicit, because that is what usually goes wrong.
On your device