Compress PDFs, resize images, trim videos, format JSON —Right in your browser.
121fast, free, privacy-first tools for PDFs, images, video, text, code and everyday math. Your files never leave your device — and you can prove it: open your browser's Network tab and watch nothing upload.
…or drop a file anywhere and we'll show what you can do with it.
New & trending
just addedAI Content Detector
Free AI content detector. The quick check runs in your browser; an optional deep analysis sends your text to our server for a more accurate score. No sign-up.
AI Image Detector
Check whether an image was AI-generated by inspecting its metadata and Content Credentials (C2PA) — free, private, in-browser. No upload.
Image Metadata Viewer (EXIF)
View an image's hidden EXIF metadata — camera, date, settings and GPS location — free and privately in your browser. No upload.
Image Metadata Remover
Remove EXIF and all hidden metadata (including GPS location) from an image for privacy. Free, in-browser, no upload — download a clean copy.
HEIC to JPG
Convert iPhone HEIC/HEIF photos to JPG for free, right in your browser. No upload, no app — decode and download instantly.
Add Watermark to PDF
Add a text watermark to every page of a PDF for free, in your browser — adjustable opacity, size and angle. No uploads.
SIP Calculator
Calculate the future value of a monthly SIP (Systematic Investment Plan) for free — see invested amount, estimated returns and total value.
cURL Converter
Convert a cURL command to JavaScript fetch and Python requests code for free, in your browser. Paste curl, copy the code.
MP4 to MP3
Extract the audio from a video and download it as an MP3 — free and in your browser. No upload; runs via ffmpeg.wasm.
Video to GIF
Convert a video clip into an animated GIF — free, in your browser. Set fps, size and duration. No upload; runs via ffmpeg.wasm.
Passport Photo Maker
Make a passport or visa photo at the correct size (US, UK, EU, Canada) for free, in your browser — plus a 6×4 print sheet. No upload.
Compress Video
Compress MP4 and other videos to a smaller file size for free, right in your browser. Quality presets and optional 720p downscale — no upload, no watermark.
Delete PDF Pages
Remove pages from a PDF for free, right in your browser. Tap the pages to delete and download the rest — no upload, no sign-up.
Screen Recorder
Record your screen online for free, right in your browser — with optional microphone narration. Download as WebM. No upload, no watermark, no sign-up.
Fill & Sign PDF
Sign a PDF online for free — draw or upload your signature, place it on the page, and download the signed PDF. Private, in-browser, no upload.
Screenshot Beautifier
Make screenshots look polished — add padding, a clean background, rounded corners and a soft shadow. Free, in your browser, no watermark, no upload.
Code to Image
Turn a code snippet into a clean, shareable image for free. Themes, backgrounds and a window frame — rendered in your browser, no upload, no sign-up.
Invoice Generator
Create and download a professional invoice PDF for free. Add line items, tax/GST and your currency (incl. ₹) — built in your browser, no upload, no sign-up.
Protect PDF (Add Password)
Password-protect a PDF with strong AES-256 encryption, free and in your browser. Nothing is uploaded — your PDF and password never leave your device.
Unlock PDF (Remove Password)
Remove a known password from a PDF, free and in your browser. Enter the password and download an unlocked copy — nothing is uploaded.
Popular tools
View all 121 →Merge PDF
Combine multiple PDF files into one document in any order — free, fast and 100% private. Files never leave your browser.
Compress PDF
Reduce PDF file size for free, right in your browser. Adjustable quality, no uploads — your file never leaves your device.
Background Remover
Remove the background from any image automatically, free and private, right in your browser. Download a transparent PNG — no uploads.
Resize Image
Resize any image (JPG, PNG, WebP) to exact pixel dimensions for free. Runs entirely in your browser — no upload, no quality loss in resampling.
QR Code Generator
Generate a QR code from any text, link, email or phone number and download it as a PNG. Free, instant and fully in-browser.
Word Counter
Free word counter and character counter. Count words, characters, sentences, paragraphs and reading time as you type. Private and instant.
AI Content Detector
Free AI content detector. The quick check runs in your browser; an optional deep analysis sends your text to our server for a more accurate score. No sign-up.
Password Generator
Generate strong, random passwords with custom length and character sets, using the secure Web Crypto API. Free and fully private.
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PDF Tools
Merge, split, rotate and convert PDFs — right in your browser, no uploads.
Merge PDF
Combine multiple PDF files into one document in any order — free, fast and 100% private. Files never leave your browser.
Split PDF
Extract pages or page ranges from a PDF into a new file — free, private and entirely in your browser. No uploads, no sign-up.
Rotate PDF
Rotate the pages of a PDF by 90°, 180° or 270° and download the fixed file. Free, private, runs entirely in your browser.
JPG to PDF
Convert JPG, PNG and WebP images into a single PDF document — free and private, with no uploads. Reorder images before converting.
Image Tools
Resize, crop, compress and convert images. Nothing leaves your device.
Resize Image
Resize any image (JPG, PNG, WebP) to exact pixel dimensions for free. Runs entirely in your browser — no upload, no quality loss in resampling.
Compress Image
Compress JPG and PNG images to reduce file size with a quality slider — free, private, in-browser. Compress one or many images at once and see the saving instantly.
Crop Image
Crop any image to a custom region by dragging a selection box — free and private, runs in your browser. Download the cropped result instantly.
Image Converter (JPG / PNG / WebP)
Convert images between JPG, PNG and WebP for free, instantly, in your browser. No uploads — pick a format and download.
Video & Audio
Convert, trim and turn videos into GIFs — right in your browser, no uploads.
MP4 to MP3
Extract the audio from a video and download it as an MP3 — free and in your browser. No upload; runs via ffmpeg.wasm.
Video to GIF
Convert a video clip into an animated GIF — free, in your browser. Set fps, size and duration. No upload; runs via ffmpeg.wasm.
Trim Video
Cut a shorter clip from a video for free, in your browser — pick start and end, no re-encoding, no quality loss. No upload.
Compress Video
Compress MP4 and other videos to a smaller file size for free, right in your browser. Quality presets and optional 720p downscale — no upload, no watermark.
Text Tools
Count, convert and transform text instantly and privately.
Word Counter
Free word counter and character counter. Count words, characters, sentences, paragraphs and reading time as you type. Private and instant.
Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and kebab-case instantly. Free and private.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text by paragraphs, sentences or words, and copy it instantly. Free dummy text generator.
Text to Speech
Convert text to spoken audio in your browser with selectable voices, speed and pitch. Free text-to-speech, no upload required.
Developer Tools
Encoders, formatters and generators for everyday dev work.
UUID Generator
Generate random v4 UUIDs (GUIDs) in bulk and copy them with one click. Free, instant and fully in-browser using the secure crypto API.
Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to text instantly. Free, private, in-browser — supports full Unicode (UTF-8).
JSON Formatter & Validator
Format, beautify, minify and validate JSON instantly. Free, private, in-browser JSON formatter with clear error messages.
QR Code Generator
Generate a QR code from any text, link, email or phone number and download it as a PNG. Free, instant and fully in-browser.
Calculators
Fast, accurate calculators for everyday math.
Age Calculator
Calculate exact age in years, months and days from any date of birth — plus total months, weeks and days. Free and instant.
Percentage Calculator
Calculate percentages three ways: X% of a number, what % one number is of another, and percentage increase or decrease. Free and instant.
BMI Calculator
Calculate your Body Mass Index (BMI) in metric or imperial units and see your weight category instantly. Free and private.
Loan / EMI Calculator
Calculate your monthly loan EMI, total interest and total payment from the loan amount, interest rate and tenure. Free and instant.