JebaTech — 100 free browser tools

Compress images, format JSON, edit PDFs, trim audio, generate QR codes and 95 more utilities. Every tool runs entirely inside your browser: no uploads, no accounts, no tracking. JavaScript is required to run the tools themselves.

Media

Barcode Generator — Create scannable Code 128 and EAN-13 barcodes with correct check digits, as PNG or SVG.
Black & White Filter — Convert photos to greyscale, sepia or pure monochrome with luminance weighting.
Blur Image Tool — Blur or pixelate a photo, or just its centre, to hide faces and details for good.
Color Palette Extractor — Pull the dominant colours out of any photo as HEX, RGB and HSL codes.
GIF Frame Extractor — Export every frame of a GIF as a PNG, fully composited, bundled in a ZIP.
GIF Speed Changer — Speed up, slow down or reverse an animated GIF by re-timing every frame.
Image Compressor — Shrink PNG, JPG and WebP files with a live quality slider and before/after size comparison.
Image Format Converter — Convert between WebP, PNG, JPG and AVIF in memory, then download with one click.
Image Inverter — Invert colours like a film negative, or invert brightness while keeping the hue.
Image Resizer & Crop — Resize and crop images with preset social aspect ratios like 1:1, 16:9 and 4:5.
Image Watermark — Add a text or logo watermark with position, size and opacity control.
Meme Generator — Add classic top and bottom captions to any image, with wrapping and a heavy outline.
QR Code Scanner — Read QR codes and barcodes from your camera or a saved image — links shown as text first.
Screen Recorder — Record a tab, window or your whole screen to WebM, with optional system or mic audio.
SVG to PNG Converter — Render SVG code or files to crisp high-resolution PNG at any scale factor.
Video to GIF — Turn a short MP4 or WebM clip into an animated GIF, with frame rate and colour control.
Webcam Photo Booth — Take snapshots from your camera with live filters, a countdown and a mirror toggle.
YouTube Thumbnail Downloader — Grab the max-res and HD thumbnails from any YouTube link or video ID.

Developer

Base64 Encoder / Decoder — Encode and decode text, images and files to and from Base64 strings and data URIs.
Code Minifier — Strip whitespace, line breaks and comments from HTML, CSS and JavaScript.
Cron Expression Parser — Translate a cron expression into plain English and preview its next run times.
cURL to fetch — Turn a copied cURL command into fetch, Axios or Node code, headers and body included.
HTML Entity Encoder — Encode and decode HTML entities so markup displays as literal text.
HTTP Status Lookup — Search every HTTP status code with a plain-English explanation of when to use it.
JSON Formatter & Validator — Beautify, validate and minify JSON with precise, actionable syntax error reporting.
JWT Decoder — Decode and inspect JSON Web Token headers, payloads, claims and expiry safely.
Markdown Live Previewer — Write Markdown in a split pane with live HTML rendering and an HTML export button.
Meta Tag Generator — Build title, description, Open Graph and Twitter Card tags with live length advice.
Regex Tester — Test regular expressions live with match highlighting, groups and a cheat sheet.
SQL Formatter — Beautify and indent SQL queries with keyword casing and one-click minify.
Subnet Calculator — IPv4 CIDR network, broadcast, mask, wildcard and usable host range — /31 and /32 included.
URL Encoder / Decoder — Percent-encode or decode URLs, query strings and URI components safely.
User Agent Parser — Read the browser, engine, operating system, device and bot flags from any UA string.
XML to JSON — Convert XML to JSON and back, keeping attributes and collapsing repeated elements into arrays.

Text

Alphabetical Sorter — Sort any list A–Z, by length, numerically or shuffled, with natural ordering.
Case Converter — Switch text between UPPERCASE, lowercase, Title Case, sentence case, camelCase and kebab-case.
Clean Slug Generator — Turn any title into a clean, accent-free, SEO-friendly URL slug instantly.
Find and Replace — Bulk find and replace across text with regex, case and whole-word options.
Lorem Ipsum Generator — Generate placeholder paragraphs, sentences or words with a one-click copy button.
Online Notepad — A distraction-free notepad that autosaves in your browser. No account needed.
Online Teleprompter — A full-screen scrolling prompter with adjustable speed, text size and mirror mode.
Remove Duplicate Lines — Strip duplicate lines, trim blanks and optionally sort the result.
Social Text Formatter — Turn text into bold, italic, script or gothic Unicode that survives bios and captions.
Text Diff Checker — Compare two texts side by side with additions and deletions highlighted in green and red.
Text to Speech — Read any text aloud with your browser's built-in voices and download-free playback.
Word & Character Counter — Live counts for words, characters, sentences, paragraphs, reading and speaking time.
Word Cloud Generator — Turn any text into a word cloud sized by frequency, and save it as a PNG.

Security

Crypto Hash Generator — Compute SHA-256, SHA-384, SHA-512, SHA-1 and MD5 hashes right in the browser.
QR Code Studio — Create custom QR codes for links, text and Wi-Fi networks with SVG and PNG download.
Secure Passphrase Generator — Diceware-style passphrases you can actually remember, with the entropy shown.
Strong Password Generator — Build cryptographically random passwords with a live entropy strength meter.
Unix Timestamp Converter — Live epoch clock with two-way conversion between Unix time and readable UTC/local dates.
UUID / GUID Generator — Generate RFC 4122 compliant UUID v4 identifiers individually or in bulk.

Calculators

Age Calculator — Find an exact age in years, months, days, hours and the next birthday countdown.
BMI Calculator — Calculate Body Mass Index in metric or imperial units with the WHO category scale.
Body Fat Calculator — Estimate body fat with the US Navy tape method, plus fat and lean mass.
Crypto Profit Calculator — Work out net profit, return and the break-even price once both trading fees are paid.
Date Difference Calculator — Days, weeks, months and business days between any two dates, plus date arithmetic.
Discount Calculator — Sale price, amount saved and the effective percentage off, including stacked discounts.
Freelance Rate Calculator — Find the hourly rate that actually covers tax, costs, holiday and unbillable time.
Fuel Trip Calculator — Estimate the fuel and cost of a journey in metric or imperial, split between passengers.
GPA Calculator — Credit-weighted grade point average, with Pass/Fail courses correctly excluded.
Loan & EMI Calculator — Monthly repayment, total interest and a full amortisation schedule for any loan.
Mortgage Calculator — Monthly repayment, total interest and a year-by-year balance, with overpayment savings.
Percentage Calculator — Work out percentages, increases, decreases and what percent one number is of another.
Random Number Generator — Draw cryptographically random numbers in any range, with or without duplicates.
Time Duration Calculator — Hours between two times, minus breaks, in both clock and decimal payroll form.
Tip Calculator — Split a bill, add a tip percentage and get the exact amount each person owes.
VAT & Sales Tax Calculator — Add tax to a net price or extract it from a gross one — correctly, not by subtracting.

Converters

Cooking Converter — Cups, spoons, millilitres, grams and ounces — per ingredient, because density differs.
CSV to JSON Converter — Convert CSV to JSON and JSON back to CSV with delimiter and header detection.
Morse Code Translator — Translate text to Morse code and back, with audible playback at any speed.
Number Base Converter — Convert between binary, octal, decimal, hexadecimal and any base from 2 to 36.
Roman Numeral Converter — Convert numbers to Roman numerals and back, from 1 to 3,999,999.
Temperature Converter — Convert between Celsius, Fahrenheit, Kelvin and Rankine instantly.
Text to Binary Converter — Convert text to binary, hexadecimal, octal and decimal byte values and back.
Unit Converter — Convert length, weight, area, volume, speed and data units with live precision.

Design

Border Radius Generator — Shape organic blobs and rounded corners with per-corner CSS radius control.
Color Contrast Checker — Test any colour pair against WCAG AA and AAA contrast ratios for accessibility.
Color Converter — Convert any colour between HEX, RGB, HSL, HSV and CMYK with a live preview.
CSS Box Shadow Generator — Design layered box shadows with live preview and copy the exact CSS.
CSS Flexbox Playground — Change any flex property and watch the boxes move, then copy the generated CSS.
CSS Glassmorphism Generator — Build a frosted-glass card with backdrop-filter and copy the CSS.
CSS Gradient Generator — Build linear and radial CSS gradients visually and copy the ready-made code.
Favicon Generator — Turn any image into a full favicon set with ready-to-paste HTML tags.
SVG Path Visualizer — See what every command in a path draws, with anchor points and a command table.

PDF

Extract PDF Pages — Keep, drop or reorder pages and save the result as a brand-new PDF.
Image to PDF — Turn JPG, PNG or WebP images into a single PDF with your choice of page size and margin.
Merge PDF — Combine several PDFs into one file, in the order you choose, without uploading anything.
PDF to Text — Pull the plain text out of a PDF, page by page, ready to copy or download.
Split PDF — Break one PDF into separate files by page, by fixed size or by custom ranges, delivered as a ZIP.

Audio

Audio Cutter — Trim MP3, WAV or OGG files with a waveform you can see, and export the selection as WAV.
Audio Joiner — Merge several tracks into one file, with an adjustable gap and automatic sample-rate matching.
Audio Reverse — Play and export any track backwards. Running it twice returns the original exactly.
Audio Speed & Pitch — Change tempo and key independently — slow a track without chipmunk voices.
Bass Booster — Lift the low end with a low-shelf filter and adjustable crossover, then export a WAV.
BPM Tap Finder — Tap along to find a track's tempo, or let the analyser estimate it from the file.
Metronome — A steady practice click scheduled on the audio clock, with accents and time signatures.
Voice Recorder — Record from your microphone with a live waveform and save a WAV — nothing is uploaded.
Volume Booster — Raise a quiet recording up to 300%, with normalising and soft limiting instead of clipping.