Explore a free tools directory by keyword and category. Use the search box, filter results, and open any tool card instantly.
All Tools is a curated directory of free online utilities built to help you finish common tasks quickly. Instead of jumping across multiple pages, you can search by keyword or use the filter tabs to quickly narrow down what you need. Most tools run directly in your browser, so you can focus on your input and get results with less friction—on desktop or mobile.
To find something fast, type in the search box. Search matches tool names, descriptions, and category names. Then use the category tabs to jump between major groups like Image, PDF, Developer, Generators, and more.
Below, tools are organized into readable category sections. Each section shows a limited set of tools first, so the page doesn't feel overwhelming. Common categories include Image Tools (convert, resize, compress, crop, Base64), PDF Tools (merge, split, extract pages, compress), Text Tools (word counting, passwords, text cleanup), and Developer Tools (regex testing, JSON validation, formatting). You'll also find 3D Tools and practical calculators.
When you see a tool you want, click the card to open it. If a category has more tools than the preview, use the View all button to expand that category. Use Show fewer to return to the curated preview. This keeps the directory focused, while still giving you quick access to everything when you need it.
Browse tools by category or click View all to explore more tools.
Browse categories using the tabs, then use the search box and filters to narrow results. When you find a tool, click its card to open it instantly and get started.
View and inspect 3D files in your browser (STL, GLTF/GLB, and more). Rotate models and export screenshots for sharing or presentations.
Quick preview for shape validation and visual checks. Helps you decide faster without heavy desktop software.
Free 360° equirectangular panorama viewer in your browser—drag to look around, zoom, fullscreen. JPEG, PNG, WebP. Never uploaded. No signup.
Use tool →Render PNG or JPEG screenshots from GLB, GLTF, STL, OBJ at custom angles and lighting. No upload—files stay on your device. Free in browser.
Use tool →Open and inspect 3D model files interactively in your browser. Supports GLB, GLTF, STL, OBJ, and FBX. Orbit, zoom, wireframe, and inspect materials — no install required.
Use tool →Free browser-based GLSL shader editor — write fragment and vertex shaders with real-time WebGL rendering. Includes u_time, u_resolution, and u_mouse uniforms for animated and interactive effects. Syntax highlighting, error console, and built-in examples. No install required. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Open GLB and GLTF 2.0 in your browser—PBR materials, animations, Draco, HD screenshots. Files stay on your device; no install or signup. Free glTF viewer up to 50 MB.
Use tool →Fast calculators for everyday decisions: BMI, calories, budgets, percentages, discounts, and more. Enter inputs and get results quickly.
Reduce guesswork for studying, planning, and personal goals. Copy the output and move forward with confidence.
Age gap or date duration in years, months, and days. Two modes, timeline, presets, copy & share—free, runs locally in your browser.
Use tool →Free average calculator: arithmetic mean, sum, count, min, max, and range from pasted lists—grades, budgets, or datasets. Private, instant, no signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Estimate bi-weekly gross and net pay from hourly rate, hours, overtime 1.5×/2×, and tax %. No upload—runs in your browser. Planning only, not official withholding.
Use tool →Calculate BMI from height and weight using metric or imperial units. See BMI category ranges and use it as a quick screening estimate. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Estimate body fat % with US Navy waist/neck/hip measurements or BMI method. Runs locally in your browser—never uploaded. Free for men and women.
Use tool →Calculate dates and times quickly: add/subtract days, compute age, convert time zones, and estimate time differences. Helps with scheduling and planning.
Browser-based tools give fast results with no setup. Enter your inputs and copy the answer immediately.
Calculate exact age from date of birth—years, months, days, next birthday. No upload: runs locally in your browser. Free, no signup.
Use tool →Free age on other planets calculator — find your age on Mars, Venus, Mercury, Jupiter, Saturn, Uranus, Neptune, and Pluto based on each planet's orbital period. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Subtract lunch and breaks from shift times to get net work hours. No upload—runs locally in your browser. Free for timesheets, no signup.
Use tool →Add or subtract days, weeks, months, or years from any date. Days-between mode included. No upload—runs locally in your browser. Free, no signup.
Use tool →Free employee hours tracker — log start/end times, breaks, and overtime for multiple employees. Calculate weekly totals and prepare payroll summaries. No signup required. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Create UI-ready values for design systems: colors, gradients, spacing, shadows, borders, typography scales, and more. Preview and copy CSS output directly.
Speed up iteration for landing pages and components. Great for matching styles and finding accessible contrast quickly.
Free CSS border radius generator — set individual corner values visually and copy the CSS border-radius property instantly. Supports all four corners independently. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free CSS box shadow generator — set X/Y offset, blur radius, spread, and color visually with live preview. Copy the finished CSS box-shadow property instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free CSS clip-path generator — build polygon, circle, and ellipse shapes visually with draggable points and copy the clip-path CSS property instantly. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free color contrast checker — test text and background color combinations for WCAG AA (4.5:1) and AAA (7:1) compliance. Essential for accessible web design. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free color palette generator — create complementary, analogous, triadic, and monochromatic palettes from any base color. Copy HEX codes instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Developer utilities for everyday engineering: test regular expressions, validate and format JSON, parse URLs and user agents, and generate UUIDs, hashes, QR codes, API keys, HTTP/CORS headers, and more.
Turn messy input into clear output in seconds. Simple copy-ready results help you iterate without setup or extra tooling.
Free .env file parser — paste any .env file and extract all environment variables as structured JSON or YAML. Useful for config migration and debugging. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Generate cryptographically secure random API keys in hex, base64, or alphanumeric format — instantly in your browser with no upload, no signup.
Use tool →Free API mock generator — create realistic mock API responses with custom status codes, response headers, and JSON body. Perfect for frontend development and testing. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free number base converter — convert between binary (base 2), octal (base 8), decimal (base 10), hexadecimal (base 16), and text in real time. No signup required. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free Base64 encoder and decoder — encode any text or data to Base64 and decode Base64 strings back to readable text. Supports URL-safe Base64 variant. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Convert files in your browser: text to PDF, PDF to text, Excel/CSV conversions, and JSON/XML transforms. Keep your workflow simple.
Pick input, run the conversion, and download the output. Useful for moving data between formats quickly.
Convert CSV to Excel online: preview rows, auto-detect delimiter, download .xlsx. UTF-8/UTF-16, text cells for leading zeros. No upload.
Use tool →Convert CSV to JSON with header detection and delimiter auto-detect. No upload—runs locally in your browser. Free paste or file, copy or download.
Use tool →Free Excel to CSV converter — upload any XLSX or XLS file and download a clean CSV instantly. Supports multiple sheets, custom delimiters, and UTF-8 encoding. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free HTML to Markdown converter — paste HTML and get clean Markdown output for GitHub docs, blog posts, Notion pages, and static site generators. Preserves links and code blocks. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free JSON to CSV converter — convert JSON arrays to CSV with automatic header row extraction. Download for Excel or Google Sheets. Handles nested objects. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Resize, convert, crop, rotate, and compress images for websites, documents, and social posts. Use background removal and format helpers like Base64 and SVG when you need specific outputs.
Browser-based processing means no installation. Ideal for consistent sizes, smaller file weights, and clean visuals you can download right away.
Paste Base64 or data:image URLs—live preview, download PNG/JPG/WebP/GIF/SVG. No upload: decoding stays on your device in the browser. Free, no signup.
Use tool →Compress or resize JPG, PNG, and WebP to under 100KB for job portals, government forms, and ID uploads. Runs locally in your browser—nothing uploaded. Batch ZIP download.
Use tool →Compress JPG, PNG, or WebP to under 200KB for blogs, CMS, and listings. No upload—runs locally in your browser. Free, instant download.
Use tool →Compress JPG or PNG images to under 50KB for government portals, passport photo uploads, visa applications, and strict ID submission requirements. No upload — runs in your browser.
Use tool →Free HEIC to JPG converter — convert iPhone and iPad HEIC photos to JPEG format for sharing, uploading, and compatibility with Windows, Android, and web. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Work with PDFs in your browser: merge files, split ranges, extract pages, reorder content, and rotate pages. Use compression to reduce download size while keeping documents readable.
Add watermarks and page numbers for consistent branding or citations. Quick, practical tools for reports, forms, and study materials.
Free tool to add page numbers to PDF — choose position, alignment, font size, and starting number. Perfect for reports, theses, and legal documents. Download instantly. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free PDF watermark tool — add custom text watermarks like DRAFT, CONFIDENTIAL, or your company name to PDF pages. Choose position, opacity, font, and angle. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free browser-based PDF compressor — pick Smallest size, Balanced, or Best quality presets and reduce PDF file size without a fixed byte target. Up to 50 MB per file. Ideal for email, cloud storage, and general uploads. No server upload, no signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Automatically compress any PDF to under 1MB without manually tuning quality settings. Built for government portals, job applications, and upload forms with a hard 1MB file-size cap. Browser-based — your file stays on your device.
Use tool →Free PDF metadata editor — change the title, author, subject, and keywords embedded in any PDF. Clean metadata for professional documents and proper attribution. No signup needed. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Handle text fast: count words and characters, generate passwords, clean formatting, and convert with Base64 encoding/decoding and case tools.
Use comparison and frequency utilities to spot differences and improve content readability. Everything runs in-browser for quick results.
Free bold text generator—Unicode bold, italic, monospace & script for Instagram, Discord, WhatsApp. No upload: runs locally in your browser.
Use tool →Free character counter — count characters (with and without spaces), words, sentences, and lines in real time as you type or paste text. No signup required. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free Lorem Ipsum generator — create placeholder text by paragraphs, word count, or byte length for wireframes, mockups, and UI design. Classic or custom Lorem Ipsum. No signup. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free online notepad — write and save notes with autosave to your browser's local storage. No account needed, no sync, completely private. Distraction-free writing tool. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Free password generator — create strong random passwords with custom length and character sets: uppercase, lowercase, numbers, and symbols. Copy instantly. Fully browser-based. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Convert measurements accurately across units like length, weight, temperature, area, volume, speed, and pressure. Get consistent numbers for everyday use.
Choose units, enter a value, and copy the result. Useful for school, work, and quick metric/imperial comparisons.
Free area converter — convert between square meters, square feet, acres, hectares, square kilometers, and more. See all unit conversions at once as you type. No signup required. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Convert MB, GB, TB, KiB, MiB, and TiB with SI (1000) or IEC (1024) toggle. Runs locally in your browser—nothing uploaded. Free, instant, copy results.
Use tool →Convert joules, calories, kcal, kWh, BTU, and eV instantly—all units at once. Runs locally in your browser; nothing uploaded. Food labels, HVAC, and physics.
Use tool →Convert meters, feet, inches, miles, kilometers, yards, and more with fast live calculations across all major units. Runs locally in your browser when supported—no upload required for normal use.
Use tool →Convert watts, kW, MW, mechanical & metric hp, BTU/h, and tons of cooling—runs locally in your browser, no upload. All units at once; pair with Energy Converter for kWh.
Use tool →Browser-first tools that are free, fast, and simple to use.