Private AI tools, finance calculators, all in your browser.
Mortgage, loan, compound interest, BMI, GPA — plus AI background remover, image upscaler, and 100+ utilities. Everything runs locally. Nothing is ever uploaded.
On-device AI — your files never leave your browser
Real neural networks running locally. No uploads. No watermarks. No quotas.
AI Background Remover
Cut out subjects from photos with on-device neural networks. No upload, no watermark.
Smart Image Upscaler
Enlarge images up to 4× with Lanczos resampling and adaptive sharpening — all in your browser.
Smart PDF Compressor
Shrink PDFs without uploading them. Re-encodes embedded images locally.
Pick a category
11 categories. 103 tools. All in your browser.
PDF Tools8 tools
Merge, split, compress, convert, and edit PDFs without uploading them.
Image Tools9 tools
Compress, resize, convert, crop, and edit images in your browser.
Developer Tools12 tools
JSON, JWT, regex, hashes, and more — instant utilities for developers.
Text Tools12 tools
Word count, case change, sort, dedupe, find/replace, slugify — instant text fixes.
Calculators12 tools
BMI, age, mortgage, loans, percentages, tip, GPA — clear math instantly.
Unit Converters10 tools
Length, weight, temperature, speed, volume, data — accurate unit conversion.
SEO & Web Tools10 tools
Meta tags, OG preview, schema, robots.txt, keyword density — ship SEO faster.
Security & Crypto8 tools
Password generator, strength meter, OTP, passphrase, AES — all client-side.
Random Generators8 tools
Random numbers, dice, coin flip, color, gradients, name pickers — for decisions.
QR & Barcode6 tools
QR codes for URLs, WiFi, vCards, SMS. Barcodes too. Scan from camera or images.
Audio & Video8 tools
Record audio, snap webcam, extract video thumbnails, mute video, speech tools.
Every tool, by category
103 tools across 11 categories. Use the search above to jump straight to one.
PDF Tools
(8)PDF Merge
Free PDF merger: combine any number of PDFs into one file, drag to reorder pages, no signup. Files are processed locally — never uploaded to a server.
PDF Split
Free PDF splitter: extract specific pages, ranges, or split a PDF into separate files. Browser-based, no upload, no quota, no watermarks ever.
PDF Compress
Free PDF compressor: shrink PDFs for email or upload by re-encoding embedded images. Adjustable quality, instant preview, runs entirely in your browser.
PDF to JPG
Convert PDF to JPG online: turn every page of a PDF into a high-quality JPG image and download them all as a ZIP. Free, and files never leave your device.
JPG/PNG to PDF
Combine JPG, PNG, or WebP images into a single PDF online. Drag to reorder pages, then download the finished document instantly — no upload, no signup.
Rotate PDF
Rotate PDF pages online — turn selected pages or the whole document 90, 180, or 270 degrees and save the result. Free, processed entirely in your browser.
Delete PDF Pages
Delete pages from a PDF online: pick the pages you want removed and download the cleaned-up document in seconds. No upload — everything runs on your device.
Add Page Numbers
Add page numbers to a PDF online. Choose position and starting number, then download the numbered file instantly. Private — the PDF never leaves your browser.
Image Tools
(9)Image Compressor
Free image compressor for JPG, PNG, and WebP with an adjustable quality slider. Before/after preview, batch mode, ZIP download — all client-side.
Image Resizer
Free image resizer: exact pixel dimensions or percentage scale, aspect-ratio lock, instant preview. Works on JPG, PNG, WebP — no upload, no signup.
Image Converter
Convert images online between HEIC, JPG, PNG, and WebP formats with adjustable quality. Fast, free, and your photos never leave your browser at any point.
Background Remover
Free AI background remover that runs locally with a real neural network. Transparent PNG output, no upload, no watermark, no quota. Browser-only.
Image Cropper
Crop images online with ready-made presets for Snapchat, Instagram, YouTube thumbnails, stories, and profile photos, or set a custom ratio. Free, no upload.
Bulk Image Resizer
Bulk resize images online — process hundreds of photos at once to exact dimensions and download them all as a ZIP. Everything runs client-side in your browser.
Image to Base64
Convert an image to a Base64 data URI or decode a Base64 string back into an image. Handles both directions instantly, free, and right in your browser.
Add Watermark
Add a watermark to an image online — overlay text or a logo with adjustable position, size, and opacity, then download. Your photos stay on your device.
Smart Image Upscaler
Free image upscaler: enlarge photos 2×, 3×, or 4× with Lanczos resampling and adaptive sharpening. Runs in your browser — no upload, no watermark, no limit.
Developer Tools
(12)JSON Formatter
Free JSON formatter, validator, and minifier with line/column error reporting. Sensitive payloads stay on your device — nothing is sent to a server.
JWT Decoder
Free JWT decoder for inspecting header, payload, and expiry. Tokens never leave your browser — safe for production tokens containing secrets or PII.
Base64 Encoder
Base64 encoder and decoder online: convert text to Base64 or decode Base64 strings back to readable text. UTF-8 safe, instant, and free to use with no signup.
URL Encoder
URL encoder and decoder online — percent-encode URLs, query strings, and parameters or decode them back to plain text. Instant results, right in your browser.
Regex Tester
Free regex tester with live match highlighting, capture groups, and replacement preview. JavaScript flavour. All matching runs locally — no server.
Hash Generator
Hash generator online: create MD5, SHA-1, SHA-256, and SHA-512 hashes from any text instantly. Free, with all hashing done locally in your own browser.
UUID Generator
UUID generator online — create one or hundreds of version 4 UUIDs at once using cryptographically secure randomness. Free, instant, and no signup required.
Lorem Ipsum
Lorem ipsum generator: create placeholder paragraphs, sentences, or words for mockups and layouts, then copy with one click. Free, instant, and no signup.
Color Converter
Color converter online — translate colors between HEX, RGB, and HSL formats with a live picker and instant copy. Free and runs entirely in your browser.
Markdown Editor
Markdown editor with live preview — write Markdown on the left and see the rendered result instantly on the right. Free, autosaves locally, nothing uploaded.
Diff Checker
Text diff checker online: compare two blocks of text and see additions and deletions highlighted side by side. Free and private — nothing leaves your browser.
Cron Parser
Cron expression parser — paste any cron schedule to get a plain-English explanation plus its next run times. Free, instant, and works right in your browser.
Text Tools
(12)Word Counter
Word counter online: count words, characters, sentences, and paragraphs in real time, with reading and speaking time estimates. Free, and no signup needed.
Case Converter
Case converter online — switch text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and kebab-case instantly. Free to use.
Reverse Text
Reverse text online: flip a string character by character, reverse the word order, or invert line order. Instant results, processed entirely in your browser.
Remove Duplicate Lines
Remove duplicate lines from text online — paste a list and get a deduped version instantly, with case-sensitive or insensitive matching. Free and private.
Sort Lines
Sort lines of text online — alphabetically A to Z or Z to A, numerically, or by length, with an option to drop blanks. Free and instant in your browser.
Find & Replace
Find and replace text online with plain search or full regex support, case-insensitive matching, and a live count of matches. Free, and nothing is uploaded.
Slugify
Slugify text online — turn any title or phrase into a clean, lowercase, SEO-friendly URL slug with hyphens. Instant conversion, free, and no signup needed.
Text ↔ Binary
Text to binary converter — translate text into binary 1s and 0s and decode binary back to readable text, in ASCII or UTF-8. Free, instant, in your browser.
Text Repeater
Text repeater online: repeat a word or phrase any number of times with an optional separator or new line between copies. Free, instant, and no signup needed.
Remove Line Breaks
Remove line breaks from text online — strip every newline, collapse extra spaces, or replace each break with a custom separator. Free, instant, no signup.
Extract Emails
Extract email addresses from any pasted text online — pulls out every address, removes duplicates, and sorts the list. Free, and runs in your browser.
Text Statistics
Text statistics online: word and character counts, reading time, most frequent words, and longest words from any pasted text. Free and instant analysis.
Calculators
(12)BMI Calculator
Free BMI calculator with WHO categories, Asian-adjusted thresholds, and healthy weight range for your height. Supports metric and imperial units.
Age Calculator
Free age calculator: see your exact age in years, months, days, weeks, and hours. Calculates days until your next birthday. Pick any reference date you like.
Percentage Calculator
Free percentage calculator. Find X% of Y, percent change between two values, percent increase/decrease, and reverse-percentage problems in one tool.
Tip Calculator
Free tip calculator with bill-split between any number of people. Choose tip %, round up to the nearest dollar, and see each person's share instantly.
Mortgage Calculator
Free mortgage calculator with monthly payment, total interest, and 15- vs 30-year breakdown. Includes 28/36 affordability rule. Private — no upload.
Loan Calculator
Free loan / EMI calculator for car, personal, and student loans. See monthly payment, total interest, total cost, and prepayment savings instantly.
GPA Calculator
Free GPA calculator on the standard US 4.0 scale. Weighted by credit hours. Supports A through F with +/- modifiers. Add or remove courses live.
Discount Calculator
Free discount calculator: enter original price and discount %, see sale price and amount saved. Add tax to get the final out-the-door price.
Compound Interest
Compound interest calculator with monthly contributions, custom frequency, and year-by-year growth. See how investments compound toward retirement.
Unit Price
Unit price calculator — compare the cost per ounce, gram, or item across package sizes to find the cheaper deal. Free, instant, and no signup required.
Time Card
Free time card calculator with lunch breaks, overtime (1.5× and 2×), and biweekly periods. Total hours and gross pay, auto-saved in your browser.
Scientific Calculator
Scientific calculator online with trigonometry, logarithms, exponents, roots, and memory functions — free, instant, and works right in your browser.
Unit Converters
(10)Length Converter
Length converter online — convert between meters, centimeters, feet, inches, miles, kilometers, and more instantly. Free unit conversion in your browser.
Weight Converter
Weight converter online: switch between kilograms, pounds, ounces, grams, and tons with instant, accurate results. Free to use, right in your browser.
Temperature Converter
Temperature converter online — switch between Celsius, Fahrenheit, and Kelvin instantly with precise formulas. Free, fast, and runs entirely in your browser.
Speed Converter
Speed converter online: convert between mph, km/h, m/s, knots, and Mach instantly with accurate results. Free, fast, and no signup or install required.
Area Converter
Area converter online — convert square meters, square feet, acres, hectares, and more instantly with accurate factors. Free and runs right in your browser.
Volume Converter
Volume converter online: convert liters, gallons, cups, fluid ounces, and milliliters instantly for cooking or science. Free, and no signup required.
Time Converter
Time unit converter — switch between seconds, minutes, hours, days, weeks, and years instantly with exact results. Free and runs right in your browser.
Data Storage
Data storage converter — convert bytes, KB, MB, GB, and TB with support for both decimal (KB) and binary (KiB) units. Free and instant, in your browser.
Energy Converter
Energy converter online: convert joules, calories, kilowatt-hours, and BTUs instantly with precise conversion factors. Free, no signup, instant results.
Pressure Converter
Pressure converter online — convert between Pa, kPa, bar, psi, atm, and mmHg instantly with accurate conversion factors. Free and runs in your browser.
SEO & Web Tools
(10)Meta Tag Generator
Meta tag generator — build complete SEO title, description, robots, and canonical tags for any page, ready to copy and paste. Free, with no signup needed.
Open Graph Preview
Open Graph preview tool — see exactly how a URL will look when shared on Facebook, LinkedIn, and other social platforms before you publish. Free and instant.
robots.txt Generator
robots.txt generator — build a clean robots.txt file with user-agent rules, allow and disallow paths, and sitemap entries in seconds. Free, no signup needed.
Keyword Density
Keyword density checker — analyze pasted text or page copy for word density, keyword frequency, top phrases, and word counts. Free, runs in your browser.
Schema Generator
JSON-LD schema generator — create structured data for Article, FAQ, Product, Local Business, and other schema.org types. Free, ready to copy and paste.
HTML Encoder
HTML encoder and decoder — escape special characters like &, <, and > into HTML entities, or convert entities back to plain text. Free and instant to use.
Canonical Tag
Canonical tag generator — create a correct rel="canonical" link tag for any URL to prevent duplicate-content issues. Free, instant, and copy-ready output.
Sitemap Generator
Free online XML sitemap generator: paste your URLs and build a valid sitemap.xml with lastmod, changefreq, and priority. Copy or download — no signup.
Twitter Card Preview
Twitter / X card preview — see how your page renders as a summary or summary_large_image card before you share the link. Free, instant, no signup needed.
CSS Minifier
CSS minifier online — strip whitespace, comments, and redundant characters from stylesheets to cut file size. Free, instant, and runs in your browser.
Security & Crypto
(8)Password Generator
Free password generator using your browser's SubtleCrypto. Pick length, character classes, and exclude lookalikes. Passwords never leave the page.
Password Strength
Password strength meter — estimate how long a password would take to crack and get tips to harden it. Checks run locally; nothing is ever sent anywhere.
Caesar Cipher
Free online Caesar cipher: encode or decode text with any ROT-N shift, with one-click ROT13. All encryption and decoding runs in your browser.
TOTP Generator
TOTP generator online — create RFC 6238 time-based one-time passwords from a secret key, with a live countdown. The secret never leaves your browser.
API Token Generator
Random token generator — create secure API keys, session IDs, and secrets in hex or Base64URL using crypto-grade randomness. Free, made in your browser.
PIN Generator
PIN generator — create random 4, 6, or 8 digit PIN numbers (or any length) with real cryptographic randomness, one at a time or in bulk. Free and instant.
Passphrase Generator
Diceware passphrase generator — create memorable, strong passphrases from a word list with adjustable length and separators. Generated locally, in private.
htpasswd Generator
htpasswd generator — create Apache .htpasswd lines with bcrypt hashing for HTTP basic auth users. Free, and your credentials never leave your device.
Random Generators
(8)Random Number
Random number generator — pick one or many integers in any range you set, using cryptographically strong randomness. Free, instant, and no signup needed.
Dice Roller
Dice roller online — roll d4, d6, d8, d10, d12, d20, and d100 tabletop dice, one at a time or in batches, with totals. Free, instant, no signup required.
Coin Flip
Coin flip online — flip a virtual coin for heads or tails, run dozens of flips in a row, and track the running tally. Free, instant, and fair randomness.
Name Picker
Random name picker — paste a list of names and draw a winner at random, perfect for raffles, giveaways, and team picks. Free, instant, no signup needed.
Decision Maker
Decision maker — type in your options and let the wheel pick one at random when you cannot choose. Quick, fun, free, and it runs right in your browser.
Random Color
Generate random colors with copyable HEX, RGB, and HSL values. Constrain to pastel, vibrant, or grayscale, or roll a whole random RGB color palette.
Random Gradient
Random gradient generator — create CSS linear and radial gradients with one click and copy the code instantly. Free design inspiration in your browser.
List Randomizer
List randomizer — shuffle any list of items into a random order with one click, great for queues, brackets, and playlists. Free, instant, no signup needed.
QR & Barcode
(6)QR Code Generator
QR code generator — create QR codes for URLs, text, email, and phone numbers, then download as PNG or SVG. Free, with codes generated in your browser.
WiFi QR Code
WiFi QR code generator — create a code guests scan to join your WiFi network instantly, no typing passwords. Free, and credentials stay on your device.
vCard QR Code
vCard QR code generator — create a QR code that saves your name, phone, and email straight to a contact list when scanned. Free, made in your browser.
SMS QR Code
SMS QR code generator — create a QR code that opens a pre-filled text message to your number when scanned. Free, instant, and generated in your browser.
Barcode Generator
Barcode generator online — create Code 128, EAN, UPC, and Code 39 barcodes and download them as images. Free, instant, and made right in your browser.
QR Decoder
Decode QR codes from an uploaded image, a screenshot, or your camera live. Reads URLs, WiFi, vCards, plain text — fully in your browser, no upload.
Audio & Video
(8)Audio Recorder
Online audio recorder — record from your microphone right in the browser and download the take as a WebM file. Free, with no upload and no signup needed.
Webcam Snapshot
Take a webcam photo or screenshot right in your browser and save it as a PNG. Front or back camera, mirror preview, no upload — nothing leaves your device.
Video Thumbnail
Video thumbnail extractor — scrub to any frame of a video and save it as a JPG or PNG still image. Free to use, and the video never leaves your device.
Audio Trimmer
Audio trimmer online — cut a clip from an MP3 or WAV file by setting start and end points, then download it. Free, and audio never leaves your browser.
Text to Speech
Text to speech online — have any text read aloud using built-in browser voices in multiple languages, with rate and pitch controls. Free and instant.
Speech to Text
Speech to text online — dictate into your microphone and watch a live transcript appear using built-in browser speech recognition. Free, with no signup.
Screen Recorder
Screen recorder online — capture a browser tab, window, or your entire screen and download the recording as WebM. Free, no install and no upload needed.
Video Mute
Mute video online — strip the audio track from MP4, WebM, or MOV files and download a silent copy in seconds. Free, and files never leave your device.
Your files stay on your device
Every tool uses Canvas, WebAssembly, and the SubtleCrypto API to do all the work locally. There is no server. We physically cannot see your data.
No queues, no waiting
Without an upload step, tools start instantly. Your CPU does the work — usually faster than waiting for a slow cloud worker to spin up.
Works on anything modern
Designed for mobile, tablet, and desktop. No installs, no accounts. If your browser is from this decade, every tool works.
Why browser-based tools?
Most free online tools work by uploading your files to a server, processing them there, and sending them back. Your documents — sometimes confidential — leave your device, get stored on someone else's machine, and are entirely subject to their privacy policy.
SnapTools works differently.Every tool runs locally via modern browser APIs. Your files stay in the tab. We can't see them. That keeps them fast, private, and free to run at any scale — which is exactly why we can give them away forever.