100+ Free Online Tools for Developers, SEO & Everyone
Browser-based utilities across 10 categories — JSON, Base64, PDF, image, video, SEO, calculators and more. No signup, no upload — files never leave your browser.
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PDF Tools
All 23Merge PDF
Combine PDFs into one file, or fit 2–9 pages per sheet or all pages onto one page. Browser-only, no upload.
Sign PDF
Draw, type, or upload a signature and add it to any PDF page. Signed on your device — nothing is uploaded.
Compress PDF
Compress PDFs by re-encoding embedded images. Light/medium/heavy presets, in-browser, no upload.
PDF to Word
Convert PDF to editable Word (DOCX) keeping text layout. Browser-only — files stay local.
PDF to Text
Pull the text out of any PDF as plain text — scanned pages included. Runs on your device, no upload, no sign-up.
PDF to Image
Convert PDF pages to JPG, PNG, or WebP at adjustable DPI (72–600). Per-page selection, in-browser.
Split PDF
Split PDF by page ranges, every N pages, or one page per file. Browser-only — no upload.
Image to PDF
Combine JPG, PNG, WebP, HEIC images into a single PDF. Page size, orientation, margin controls.
Text Tools
All 10Fancy Text Generator
Convert plain text into 30+ Unicode font styles — bold, cursive, monospace, fraktur. One-click copy.
Text to Speech
Read text aloud in 30+ languages using your browser's built-in voices. Adjustable speed, no signup.
Number to Words
Convert any number — including currency and decimals — to English words. Perfect for checks and legal docs.
Roman Numeral Converter
Convert numbers and dates to Roman numerals. Tattoo preview font, supports 1–3,999,999.
Text to Binary
Translate text ↔ binary, plus hex, octal, decimal. UTF-8 safe — handles emojis and CJK correctly.
Invisible Character
Copy invisible/blank Unicode characters — Hangul Filler, zero-width space, Braille blank, more.
Remove Line Breaks
Remove line breaks and extra whitespace. Optionally preserve paragraph breaks. Great for PDF/email cleanup.
Text Repeater
Repeat any text up to 10,000 times with custom separators (newline, comma, space, custom).
Image Tools
All 18Image Compressor
Compress JPG, PNG, WebP, AVIF up to 80% smaller. Bulk, browser-only — files never upload.
Background Remover
Remove image backgrounds with an in-browser AI model. Transparent PNG output, no upload to servers.
Image to Text (OCR)
Copy text from photos, screenshots, and scans. OCR runs on your device — no upload, no sign-up, no limits.
HEIC to JPG Converter
Convert iPhone HEIC/HEIF photos to JPG or PNG in batches, keeping date and camera details. Browser-only — no upload.
Image Resizer
Resize images to exact pixels or social-media presets (Instagram, X, YouTube). Bulk supported.
Image Format Converter
Convert PNG, JPG, WebP, AVIF, HEIC, BMP, GIF and SVG to JPG, PNG, WebP or BMP — in bulk, in your browser.
Image Cropper
Crop images with 1:1, 4:3, 16:9, 9:16, and custom aspect ratios. Drag handles, in-browser.
Rotate & Flip Image
Rotate images by any angle (90°, 180°, custom) or flip horizontally/vertically. Browser-only.
Video Tools
All 7Screen Recorder
Record your screen, a window, or a browser tab with system audio and microphone. No watermark, no time limit, nothing to install.
Video to MP3
Extract audio from MP4, WebM, MOV, MKV as MP3 or WAV. Custom bitrate, in your browser, no upload.
Teleprompter
Paste your script and read it as it scrolls. Adjust speed and text size, mirror it for glass, and record yourself with your camera.
Video Compressor
Compress MP4, WebM, MOV, MKV with FFmpeg in your browser. Light/medium/heavy presets, no watermark.
Video to GIF
Convert MP4 to GIF in your browser. Trim, set frame rate (10–25 fps), pick width. No watermark.
Remove Audio
Strip the audio track from any video without re-encoding — instant, lossless, no watermark.
Video Trimmer
Trim any video to exact start/end times. Browser-only — no upload, no watermark, no signup.
Audio Tools
All 8Metronome
Steady, sample-accurate click from 20 to 300 BPM with tap tempo, accents, subdivisions, and odd time signatures.
Audio to Text
Transcribe audio and video to text with Whisper AI in your browser. Export TXT, SRT, or VTT subtitles — no upload, no limits.
Merge Audio Files
Join MP3, WAV, M4A and more into one file, in the order you choose, with an optional gap between tracks. No upload.
Remove Silence from Audio
Cut dead air and long pauses out of a recording, or trim only the silent start and end. Runs in your browser — no upload.
Remove Background Noise
Strip hiss, hum, fan and air-conditioning noise out of a recording. Three strength settings, runs in your browser — no upload.
Voice Recorder
Record your voice via browser mic with live waveform. Save as MP3 or WAV. No app, no upload.
Audio Trimmer
Trim MP3, WAV, OGG, FLAC with a visual waveform editor. Precise selection, browser-only.
Audio Speed Changer
Speed up or slow audio from 0.25x to 4x with optional pitch preservation. Browser-only, no upload.
Developer Tools
All 23JSON Formatter & Validator
Format, beautify, and validate JSON instantly. Errors with line numbers, runs 100% in your browser.
Base64 Encoder & Decoder
Encode or decode Base64 instantly with full UTF-8 and emoji support. No upload, runs in your browser.
UUID Generator (v4)
Generate random UUID v4 identifiers in bulk. RFC 4122 compliant, client-side, no signup.
Hash Generator
Compute MD5, SHA-1, SHA-256, and SHA-512 hashes from any text — all at once, in your browser.
URL Encoder & Decoder
Encode or decode URLs with percent-encoding. Choose encodeURI or encodeURIComponent. UTF-8 safe.
Regex Tester
Test and debug JavaScript regex with real-time match highlighting and capture-group colors.
Diff Checker
Compare two texts or code blocks side-by-side. Word-level highlighting, no signup, client-side.
Code Beautifier
Format and beautify HTML, CSS, and JavaScript. Expand minified files, fix indentation, copy in one click.
SEO Tools
All 8Word Counter
Count words, characters, sentences, paragraphs, plus reading time and platform character limits.
Character Counter
Count characters with and without spaces. Live limits for Twitter/X, Instagram, LinkedIn, and meta descriptions.
Meta Tag Generator
Generate SEO, Open Graph, and Twitter Card meta tags with live Google/Facebook/X preview.
Robots.txt Generator
Generate, validate & block AI bots with robots.txt.
Sitemap Generator
Build a valid XML sitemap with per-URL priority, changefreq, and lastmod. No crawl limit.
Lorem Ipsum Generator
Generate lorem ipsum placeholder text — words, sentences, paragraphs, or HTML-wrapped output.
Slug Generator
Convert any text or title into a clean, SEO-friendly URL slug. Transliteration for non-Latin scripts.
Open Graph Preview
Preview how your links appear on Facebook, X, LinkedIn, Discord, Slack & WhatsApp before publishing.
Marketing Tools
All 10QR Code Generator
Generate static QR codes with custom colors, logo, and SVG/PNG export. Static — no link tracking.
QR Code Scanner
Read QR codes from photos, screenshots, PDFs, or your camera. Decoded on your device — see the link before you open it.
UTM Parser
Paste tracked links to see every UTM parameter in a table, catch naming mistakes, and copy clean URLs without tracking tags.
UTM Builder
Build UTM-tagged campaign URLs with all 5 parameters. Naming-convention validation and one-click copy.
Hashtag Generator
Build hashtag sets for Instagram, TikTok, YouTube, X, and LinkedIn from one topic, with each platform's real limits.
Email Signature Generator
Build an HTML email signature with logo and social links, plus the setup steps for Gmail, Apple Mail, iPhone, and Outlook.
Privacy Policy Generator
Generate a privacy policy with GDPR, CCPA, and COPPA clauses. Website, app, or e-commerce templates.
Terms of Service Generator
Generate Terms of Service tailored to your site or app. Liability limits, governing law, dispute clauses.
Calculators
All 28Percentage Calculator
Find X% of Y, percentage change, increase, decrease, and reverse percentage — with formulas shown.
Mortgage Calculator
Calculate monthly mortgage payments with principal, interest, taxes, PMI, insurance & HOA. Free amortization schedule and loan comparison.
Personal Loan Calculator
Calculate personal loan payments, interest, and credit score impacts.
Age Calculator
Calculate exact age in years, months, days, hours, minutes. Birthday countdown and age-difference mode.
Unit Converter
Convert length, weight, temperature, area, volume, speed, time, and data units with every result shown at once.
Random Number Generator
Generate cryptographically secure random numbers, roll dice, flip coins.
BMI Calculator
Calculate BMI in metric (kg/cm) or imperial (lb/ft). Visual category scale and the healthy weight range for your height.
Tip Calculator
Calculate tips and split bills instantly. Choose tip percentage, divide among friends, see per-person totals with round up option.
Productivity Tools
All 12Password Generator
Generate strong random passwords or word passphrases instantly with a live entropy meter.
Spin the Wheel
Add names or options, spin, and let the wheel decide. Weights, no-repeat mode, and fullscreen — no sign-up.
Stopwatch
Precise stopwatch with laps, splits, fastest and slowest lap, CSV export, and fullscreen. Keeps running after a reload.
Resume Builder
Build an ATS-friendly resume with a live preview and download it as a PDF. Free for real — no sign-up, paywall, or watermark.
Invoice Generator
Create invoices, quotes, and receipts with tax and discounts, then download a PDF. No sign-up, no watermark, saved in your browser.
Pomodoro Timer
Focus timer with customizable work/break intervals, audio cues, and session count. No signup, no install.
Timezone Converter
Convert and compare times across world cities. Drag-slider planner with DST and working-hours overlay.
Unix Timestamp Converter
Convert Unix epoch ↔ readable date. Seconds, milliseconds, relative time, and code snippets for 10+ languages.