ToolAdda is a free online toolbox that currently offers 158 browser-based tools, covering multiple categories such as calculators, text, images, PDFs, and browser games. The platform emphasizes privacy first, with almost all tools running entirely on the user's own device, requiring no registration, no file uploads, no watermarks, no usage limits, and being free forever.
Main Capabilities
PDF Tools
Includes PDF page organization (drag-and-drop sorting, deletion, duplication, rotation, pulling pages from other PDFs), adding page numbers to PDFs (six positions, Roman numerals, page ranges, custom text), PDF cropping (drag a crop box or enter millimeter margins, automatically trim white edges from scans), PDF signing (hand-drawn, typed, or uploading a signature image with the paper background removed and placing it), watermarking PDFs, comparing two PDFs, permanently removing sensitive text (manual, search, and OCR redaction), locking form fields or flattening to images, and PDF to image.
Image Tools
Includes image watermarking (single corner, diagonal, or tiled patterns, with batch processing to ZIP), image background removal or replacement, SVG to PNG/JPG/WebP, compressing images to an exact KB size, passport-size photo creation (24 official sizes), resizing signatures to an exact KB range, text to handwriting, EXIF removal, image steganography (hiding text or files in images with AES-256 encryption), QR code and barcode label sheets, printable ID card creation, poster printing (splitting an image across multiple A4/A3 pages).
Calculators
Includes a scientific calculator (editable history, unit and base conversion, graphing, equation solving, matrices, statistics), age calculator, advanced calculator, percentage calculator (13-in-1), BMI calculator, EMI calculator, loan calculator, mortgage calculator, car loan calculator, FD calculator, PPF calculator, manual tax calculator (comparing old and new tax regimes), GPA/CGPA calculator, attendance calculator, Luxembourg salary calculator (2026 tax rates), US mortgage calculator, US car loan calculator, credit card repayment calculator, student loan repayment calculator.
Developer Tools
Includes JSON formatting and validation, regex tester, hash generator (MD5/SHA-1/SHA-256/SHA-512), JWT decoding and validation, URL encoding and decoding, UTM link builder, URL shortener, Cron expression generator, SVG optimization, YAML Convert XML, .htaccess generator, robots.txt generator and tester, sitemap generator, UUID generator, CSS to Tailwind, PPK to PEM converter, Epoch/Unix timestamp converter, base conversion, and more.
Security and Network Tools
Includes password strength checker (zxcvbn crack time estimation), password generator, SSH key generator (Ed25519, RSA, ECDSA), SSL/TLS analysis, Dofollow/Nofollow link checker, internet speed test, responsive design tester (30 device presets), camera test, microphone test.
Indian Financial and HR Tools
Includes payslip generator (Indian format PDF, CTC breakdown, PF/LOP assistant, bulk CSV, 4 templates), resume builder (ATS-friendly, export PDF/DOCX/TXT), ATS resume checker, rent receipt generator, land area unit conversion (bigha, katha, guntha, etc., with state-specific conversion factors), manual tax calculator, and more.
Education and Document Tools
Includes handwriting tracing practice sheets, worksheet generator (math and handwriting practice, with answers), paper generator (graph, dot grid, lined, four-line, music, hexagonal, Cornell notes, etc.), bingo card generator, exam seating arrangement planner, OMR answer sheet generator, GPA/CGPA calculator, and more.
Text and Utility Tools
Includes online notepad (auto-save Markdown, live preview, multiple notes, export PDF/DOCX, available offline), fancy font generator (40+ Unicode fonts), Emoji and kaomoji picker, random name picker (wheel, draw mode, weighted odds), online teleprompter, WhatsApp chat analyzer (offline analysis of .txt chat logs).
Science Tools
Includes chemical equation balancer, half-life and decay calculator, 3D molecular structure viewer (120+ molecules), interactive periodic table (118 elements), electron configuration builder.
Games
Includes tic-tac-toe (hard AI with four difficulty levels, two-player same device), chess (four difficulty levels, two-player available, supports American/International/Russian rules), Reversi (AI precise endgame calculation, 8×8 or 6×6 board), Connect Four (AI with four difficulty levels or two-player, supports undo and scoreboard).
Astrology Tools
Birth chart generator: enter birth date, time, and place to get a complete janam kundali, including lagna, rashi, nakshatra, North Indian and South Indian charts, navamsa, Vimshottari dasha, and birth panchang.
How to Use
All tools can be opened and used directly in the browser, with no registration or login required. For tools processed locally, files do not leave the user's device. The platform provides a tool search feature; after entering keywords, press Enter to open the first result. It supports mobile phones, tablets, and desktop devices, using a responsive layout and touch-friendly controls.
Use Cases
Suitable for users who need to quickly complete calculations, file conversions, image processing, PDF editing, developer debugging, Indian financial calculations, resume creation, educational material generation, and other tasks in the browser. Especially suitable for scenarios that prioritize privacy and do not want to upload files to a server.
Limitations
The materials do not provide detailed information about platform fees, pricing, specific performance metrics (such as processing speed limits, file size limits), platform availability guarantees, customer support, etc. Some tools state that they run entirely locally, but the materials do not indicate that all tools do so. The materials do not provide specific usage limits, compatibility details, or error handling methods for the tools.
