253 tools live · 100% in your browser

Free utilities that never touch a server.

Merge PDFs, edit audio and video, compress images, design social posts, generate passwords and more — all inside your browser. No uploads, no sign-up, no limits.

Nothing uploaded
No upload wait
No limits or sign-up

Popular right now

The tools people open most often.

View all tools

Secure Password Generator

Generate strong random passwords with crypto.getRandomValues.

In-browserPrivate

Compress Image

Reduce JPG, PNG and WebP file size with adjustable quality and dimensions.

In-browser

PDF Merger

Combine multiple PDF files into one document without uploading them.

In-browserPrivate

Background Remover

Remove a solid-colour background from product photos and export a transparent PNG.

In-browserPrivate

Video Trimmer

Trim a video to a selected range and export WebM, with optional audio removal.

In-browserPrivate

LinkedIn Post Formatter

Style LinkedIn posts with Unicode bold and italic, bullets and clean spacing.

In-browser

Browse by category

12 live categories, 0 more in build.

Text & Writing28Count, clean, compare, convert and generate text without pasting it into someone else's server.Developer & Data20JSON, CSV, Base64, JWTs, hashes and identifiers — the small utilities every developer reaches for daily.Design & Color20Generate CSS shadows, gradients and radii, convert colors and check accessibility contrast.Calculators20Everyday math for money, dates and percentages, with the working shown so you can trust the result.PDF & Documents20Merge, split, compress, sign and convert PDFs locally with pdf-lib and PDF.js.Image Utilities20Compress, resize, crop, convert and clean image metadata using the Canvas API.Social & Creator20Format posts and build pixel-accurate social mockups in a split-studio workspace.Security & Privacy20Generate passwords, encrypt files and inspect tokens without sending secrets anywhere.Audio & Video34Trim, convert and record audio and video locally with WebCodecs and Web Audio.Creator & Micro-AI20QR codes, barcodes, background removal and other creator utilities powered by WASM.GIF & Animation12Make, edit, optimize and convert animated GIFs, WebP and APNG entirely in your browser.Convert & Transform19Convert documents, spreadsheets, e-books, archives, audio and video formats locally — no uploads, no size games.

Why client-side matters

The tool runs where your data already lives: your device.

Your data stays yours

There is no upload endpoint. Files are read into memory, processed, and released when you close the tab.

Instant, not queued

No round trip to a server means no waiting in line. Speed depends on your device, not our infrastructure.

Free without footnotes

No trial, watermark, file cap or forced account. Optional accounts only save favourites and presets.

All live tools

253 tools

Text & Writing28

View all

Word & Character Counter

Live counts for words, characters, sentences, paragraphs and reading time.

In-browserPrivate

Case Converter

Switch text between upper, lower, title, sentence, camel, snake, kebab and constant case.

In-browser

Text Diff Checker

Compare two texts line by line and highlight additions, deletions and changes.

In-browser

Duplicate Line Remover

Remove repeated lines from any list while preserving the original order.

In-browser

Line Break & Space Cleaner

Strip extra line breaks, double spaces, tabs and invisible characters from copied text.

In-browser

Find & Replace

Bulk search and replace with optional regular expressions and case matching.

In-browser

Developer & Data20

View all

JSON Formatter

Pretty-print JSON with configurable indentation, sorting and syntax highlighting.

In-browser

JSON Validator

Validate JSON syntax and jump straight to the character that broke it.

In-browser

JSON Minifier

Strip every unnecessary byte from JSON before shipping it over the wire.

In-browser

JSON to CSV Converter

Flatten an array of JSON objects into a spreadsheet-ready CSV file.

In-browser

CSV to JSON Converter

Convert CSV rows into a clean JSON array with automatic type detection.

In-browser

Base64 Encoder / Decoder

Encode text or files to Base64 and decode back, with full UTF-8 support.

In-browser

Design & Color20

View all

CSS Box Shadow Generator

Design layered box shadows visually and copy production-ready CSS.

In-browser

CSS Gradient Generator

Create linear, radial and conic gradients with multiple colour stops.

In-browser

Border Radius Generator

Control each corner independently and preview organic shapes and pills.

In-browser

Color Converter

Convert between HEX, RGB, HSL and HSV with live swatches and contrast hints.

In-browser

WCAG Contrast Checker

Measure text contrast ratios and check AA/AAA compliance for normal and large text.

In-browser

PX to REM Converter

Convert pixels to rem and back with a configurable root font size.

In-browser

Calculators20

View all

Percentage Calculator

Solve every common percentage question: of, is what percent, and percent change.

In-browser

Tip & Bill Splitter

Calculate the tip, total and per-person share for any bill.

In-browser

Discount Calculator

Find the sale price and the exact amount saved from any discount.

In-browser

Loan & Mortgage Calculator

Estimate monthly repayments, total interest and the full amortisation schedule.

In-browser

Compound Interest Calculator

Project savings growth with monthly contributions and any compounding frequency.

In-browser

Date Difference Calculator

Count days, weeks, months and business days between two dates.

In-browser

PDF & Documents20

View all

PDF Merger

Combine multiple PDF files into one document without uploading them.

In-browserPrivate

Split PDF

Extract a page range into one PDF or split every page into separate files.

In-browserPrivate

Rotate PDF Pages

Turn individual pages or the whole document 90, 180 or 270 degrees.

In-browserPrivate

Delete PDF Pages

Select unwanted pages visually and remove them from the document.

In-browserPrivate

Reorder PDF Pages

Drag pages into a new order and export the rearranged document.

In-browserPrivate

Compress PDF

Shrink a PDF by re-rendering pages at a lower resolution and JPEG quality.

In-browserPrivate

Image Utilities20

View all

Compress Image

Reduce JPG, PNG and WebP file size with adjustable quality and dimensions.

In-browser

Image Format Converter

Convert between JPG, PNG and WebP with transparency and quality controls.

In-browser

Resize Image

Change image dimensions by pixels or percentage while locking the aspect ratio.

In-browser

Rotate Image

Rotate a photo by any angle with a chosen background for the corners.

In-browser

Crop Image

Drag to crop any region, with fixed ratios for avatars, video and social posts.

In-browser

Mirror & Flip Image

Flip an image horizontally or vertically and rotate it in quarter turns.

In-browser

Social & Creator20

View all

LinkedIn Post Formatter

Style LinkedIn posts with Unicode bold and italic, bullets and clean spacing.

In-browser

Social Character Counter

Check one caption against the limits for X, LinkedIn, Instagram, TikTok, YouTube and SEO.

In-browser

Hashtag Formatter

Clean, deduplicate and format hashtags for any social platform.

In-browser

UTM Link Builder

Generate campaign URLs with source, medium, campaign, term and content parameters.

In-browser

Emoji Picker

Search and copy emoji by name without opening a system picker.

In-browser

Open Graph Previewer

Preview how a link looks on Google, X and Facebook before publishing.

In-browser

Security & Privacy20

View all

Secure Password Generator

Generate strong random passwords with crypto.getRandomValues.

In-browserPrivate

Password Strength Checker

Estimate password entropy, weaknesses and offline crack time locally.

In-browserPrivate

Passphrase Generator

Generate memorable multi-word passphrases with a separator and number.

In-browserPrivate

API Token Generator

Generate high-entropy API keys in hex, Base64URL or alphanumeric form.

In-browserPrivate

HMAC Generator

Compute HMAC signatures with SHA-1, SHA-256 or SHA-512 locally.

In-browserPrivate

AES File & Text Encryptor

Encrypt text or files with AES-256-GCM and a passphrase, locally.

In-browserPrivate

Audio & Video34

View all

Audio Recorder

Record microphone audio in the browser and download it as WebM or M4A.

In-browserPrivate

Audio Trimmer

Cut a start and end point from an audio file and export a clean WAV.

In-browserPrivate

Audio Waveform Visualizer

Render an audio file as a waveform image for video, podcasts and thumbnails.

In-browserPrivate

Audio Speed Changer

Slow down or speed up an audio file and export a WAV.

In-browserPrivate

Audio Volume Normalizer

Raise or lower a recording to a consistent peak level and export WAV.

In-browserPrivate

Audio Reverse

Play an audio file backwards and download the reversed WAV.

In-browserPrivate

Creator & Micro-AI20

View all

Background Remover

Remove a solid-colour background from product photos and export a transparent PNG.

In-browserPrivate

Meme Generator

Add classic top and bottom captions to any image and export a meme.

In-browserPrivate

Product Mockup Generator

Preview a design on a T-shirt mockup with a custom shirt colour and size.

In-browserPrivate

Image to ASCII Art

Convert a photo into text-based ASCII art with adjustable width.

In-browserPrivate

Invoice Generator

Create a professional invoice PDF with line items, tax and totals.

In-browserPrivate

Packing Slip Generator

Create a packing slip PDF with order items and quantities, without prices.

In-browserPrivate

GIF & Animation12

View all

Animated GIF Maker

Combine images into an animated GIF with custom timing, size and fit.

In-browser

Animated GIF Resizer

Resize every frame of a GIF or animated image while keeping timing.

In-browser

Animated GIF Cropper

Crop a rectangular area from every frame of an animated GIF.

In-browser

GIF Rotator & Flipper

Rotate or flip every frame of an animated GIF.

In-browser

GIF Speed Changer

Speed up or slow down an animated GIF by changing frame delays.

In-browser

GIF Reverser

Reverse the frame order of an animated GIF.

In-browser

Convert & Transform19

View all

DOCX to PDF Converter

Turn a Word DOCX file into an A4 PDF in your browser. No upload, no account and no watermark.

In-browser

DOCX to Markdown, HTML or Text

Convert a Word document to Markdown, HTML or plain text locally, with headings, lists and tables preserved.

In-browser

PDF to DOCX Converter

Extract the text layer of a PDF into an editable Word document, page by page, in your browser.

In-browser

HTML to PDF Converter

Render an HTML file into a paginated PDF locally. Scripts are blocked and nothing is uploaded.

In-browser

RTF to Text Converter

Strip RTF control codes and get readable plain text, locally and instantly.

In-browser

XLSX to CSV Converter

Convert the first sheet of an Excel workbook to CSV in your browser.

In-browser

Every tool is free. No account required.

Browse all tools Create a free account Request a tool