129 free tools · No sign-up · Files stay on your device
Free online tools for everyday tasks
Calculators, PDF, image, text and developer tools that work right in your browser. Find the one you need in seconds.
Popular tools
The tools people reach for most.
Compress Image
Shrink JPG, PNG and WebP images to a target size like 50 KB.
PDF Editor
Edit PDF text, fill forms, add signatures and reorder pages.
Percentage Calculator
Find X% of Y, percentage change and percentage difference.
Merge PDF
Combine several PDFs into one file, in the order you choose.
JSON Formatter
Format, validate and minify JSON with exact error locations.
QR Code Generator
Make QR codes for links, Wi-Fi, contacts and more. PNG or SVG.
PDF to Word Converter
Turn a PDF into an editable Word document, or Word into PDF.
Word Counter
Count words, characters, sentences and reading time as you type.
Resize Image
Resize images to exact pixels or a percentage, keeping proportions.
GST Calculator
Add or remove GST at 5%, 18% or 40%, with the CGST/SGST or IGST split.
Age Calculator
Your exact age in years, months and days, plus your next birthday.
Browse by category
Pick an area to see everything it can do.
- All 13 tools
Calculators & Finance
Work out percentages, GST, loan EMIs, SIP returns, take-home pay and unit conversions.
- All 10 tools
PDF & Documents
Edit, merge, split, rotate and convert PDFs, including PDF to Word and images to PDF.
- All 21 tools
Image & Media
Compress, resize, crop and convert images, make QR codes and barcodes, and trim video.
- All 9 tools
Text & Writing
Count words, change case, compare, sort and clean text, or dictate and listen to it.
- All 11 tools
Date & Time
Find your exact age, count days or business days between dates, convert timestamps and time things.
- All 3 tools
Business & Marketing
Price with confidence: profit margins, break-even points, ROI and campaign tracking links.
- All 4 tools
Random & Games
Flip a coin, roll dice, draw random numbers, pick a name or spin a wheel, with fair, unbiased randomness.
- All 11 tools
AI Tools
Summarise, rewrite and simplify text, extract keywords, explain JSON and read text in images.
- All 24 tools
Developer & Data
Format and validate JSON, encode Base64 and URLs, decode JWTs, test regex and convert data.
- All 21 tools
API, HTTP & Network
Test your internet speed, look up status codes and headers, parse URLs, send requests and turn cURL into fetch, Axios or Python.
- All 2 tools
Security & Generators
Generate strong passwords and cryptographic hashes without anything leaving your device.
New on TabBench
Recently added tools.
Subnet Calculator
IPv4 & IPv6 CIDR subnet calculator with binary bit breakdown.
MAC Address Lookup
Identify hardware vendors, normalize MAC formats, and decode OUI bits.
IPv4 to IPv6 Converter
Convert IPv4 to mapped, 6to4, hex, and compress or expand IPv6.
SSL Certificate Decoder
Inspect X.509 certificates and CSRs, validity dates, SANs, and keys.
SQL Formatter
Format, beautify, and minify SQL queries for Postgres, MySQL, and SQLite.
JSON to YAML Converter
Convert bidirectional JSON to YAML and YAML to JSON with presets.
Chmod Permissions Calculator
Interactive 3x3 Linux permissions matrix, octal sync, and command generator.
Docker Run to Compose
Convert docker run CLI commands into docker-compose.yml files.
CSS Box Shadow Generator
Multi-layer CSS box shadows with live preview and Tailwind export.
Glassmorphism Generator
Create modern CSS frosted glass effects with backdrop blur and border glow.
PX to REM Converter
Convert PX to REM and calculate responsive fluid clamp() typography.
SVG to Data URI Converter
Clean and encode SVG markup into UTF-8 and Base64 Data URIs.
Color Palette Generator
Generate 11-step Tailwind color shades with WCAG accessibility contrast.
LLM Token Counter
Estimate BPE tokens, context limits, and API costs for GPT-4o, Claude, and Gemini.
AI Prompt Optimizer
Build structured XML system prompts with role isolation and negative rules.
AI Function Calling Schema
Build OpenAI Structured Output and Anthropic Tool Call JSON schemas.
Prompt & Context Cleaner
Strip markdown, HTML, comments, and mask PII to reduce token consumption.
Tip & Bill Split Calculator
Calculate tips, split group bills, round per person, and copy SMS summary.
Fuel Cost Calculator
Calculate road trip gas costs, fuel consumed, and passenger splits.
Work Hours Calculator
Calculate shift hours, weekly timesheets, unpaid breaks, and overtime pay.
Time Format Converter
Convert between 12-hour AM/PM, 24-hour and military time instantly.
cURL to Fetch Converter
Convert a curl command to JavaScript fetch code.
Regex Builder
Build a regular expression from blocks, with live matches.
Coin Flip
Flip a fair coin online: heads or tails, or flip many at once.
Dice Roller
Roll d4, d6, d20, d100 or any dice notation like 4d6kh3.
Pomodoro Timer
25/5 focus and break cycles with a daily session counter.
Online Camera
Take clearer photos and videos in your browser, with filters.
PNG to SVG Converter
Trace a PNG or JPG into a scalable SVG vector.
Text Sorter & Duplicate Remover
Sort lines A–Z or by length, and remove duplicate lines.
Unit Converter
Convert length, weight, temperature, area, volume, speed and data.
Online Stopwatch
A stopwatch with laps, and a countdown timer with an alarm.
Scientific Calculator
Standard and scientific calculator with history and keyboard input.
Useful tools you might not know about
Small utilities that save a surprising amount of time.
HTTP Header Analyzer
Paste HTTP headers to see what each means and what to fix.
Content-Type Header Checker
Pick, check or detect the right Content-Type header.
World Clock & Meeting Planner
See the time in any city and find a meeting time across time zones.
Sample File Generator
Create test images, PDFs, CSV, JSON or video at an exact file size.
EXIF Metadata Viewer
See the camera, date and location hidden in a photo, and remove them.
Color Contrast Checker
Check text and background colours against WCAG AA and AAA.
Cron Expression Explainer
Read cron schedules in plain English and build new ones.
Favicon Generator
Turn a logo into every favicon and app icon size a site needs.
Cut Video
Trim a video to a start and end point without re-encoding.
UTM Builder
Build campaign tracking links, or strip tracking from a URL.
Markdown Table Generator
Build Markdown and HTML tables in a spreadsheet-style grid.
AI tools that keep your text private
Most AI tools upload whatever you give them. These run on your own device by default, so a draft, a contract or a scanned document never leaves your browser. Where a cloud model is genuinely better — handwriting, tables, other scripts — it is an explicit, labelled choice, never the default.
- LLM Token CounterEstimate BPE tokens, context limits, and API costs for GPT-4o, Claude, and Gemini.
- AI Prompt OptimizerBuild structured XML system prompts with role isolation and negative rules.
- AI Function Calling SchemaBuild OpenAI Structured Output and Anthropic Tool Call JSON schemas.
- Prompt & Context CleanerStrip markdown, HTML, comments, and mask PII to reduce token consumption.
- Image to Text (OCR)Copy text out of screenshots, scans and photos (OCR).
- AI Code & Formula ExplainerPlain-English explanations of formulas, calculations and code.
- AI Text SummarizerCondense long text into a short summary or key bullet points.
- AI Text RewriterRewrite text in a professional, friendly, concise or formal tone.
- AI Text SimplifierTurn dense or technical writing into plain, easy English.
- AI Keyword ExtractorPull the main keywords and key phrases out of any text.
- AI JSON ExplainerGet a plain-English walkthrough of what a JSON payload contains.
Guides
Step-by-step answers to the problems these tools solve.
- How to compress an image to 50KBGet any photo under 50KB for exam and government form uploads, without the image becoming unreadable. Free, runs in your browser.
- How to calculate percentage increase and decreaseLearn how to calculate percentage increase and decrease with the exact mathematical formula, step-by-step examples, and common pitfalls.
- Complete guide to JSON formatting and validationMaster JSON syntax rules, fix common errors like trailing commas and single quotes, and format nested API payloads cleanly in your browser.
- How to convert PDF to Word without losing formattingStep-by-step guide to converting PDF documents to editable Microsoft Word (.docx) files while preserving paragraphs, headings, and layouts.
- How to calculate GST: inclusive vs exclusive formulasThe formulas to add or remove GST from an invoice price at the 5%, 18% and 40% slabs (and older 12% and 28% invoices), with worked examples.
- How to do voice typing in Hindi (and other Indian languages)Type Hindi, Tamil, Bengali and more by speaking, straight in your browser. No keyboard layout, no app install, no signup.
Why TabBench
TabBench is a set of focused tools for the small jobs that come up every day — for students, developers, office work and small businesses. Most tools do their work inside your browser, so the files and text you use them on are never uploaded. The few that need the internet say so on the page.
- Private by design
- Images, PDFs and text are processed on your device. There is no upload step to wait for and nothing stored on a server.
- No account, no limits
- Every tool is free to use as often as you like. Favorites and history are kept in your browser, not in an account.
- Fast on any device
- Work happens locally, so results appear as you type or as soon as a file is read — and most tools keep working offline.
- Honest about the network
- Live exchange rates, speech recognition and the optional cloud AI mode need the internet. Those pages tell you exactly what is sent.
Are the tools really free to use?
Yes. All 129 tools are free for personal, commercial and educational use, with no usage limits. No account or card is ever required. The site is supported by advertising.
Do you store or look at my files?
No. Files you open in the image, PDF and document tools are read and processed by your own browser and are never sent to us. If you use the optional cloud AI mode, that tool's input is sent to Google's Gemini model and the page says so before you choose it.