Most tools run in your browser with zero uploads. AI features use secure cloud processing — clearly marked on every tool.
Generate .gitignore files by selecting languages, frameworks, and tools from a checklist — covers Node, Python, Java, Go, Rust, macOS, Windows, Linux, and popular IDEs. Supports negation patterns and custom rules.
Split calories into protein, carb, and fat grams for any diet target. Turn 2000 kcal into exact macros — free, local, no signup.
Check A/B test significance — conversion lifts that are real vs noise. Stop shipping coin flips — free, local, no signup.
Manually black out the first 8 digits of your 12-digit Aadhaar number on card images by drawing boxes — download the masked copy. Fully local processing.
Validates Aadhaar numbers using Verhoeff checksum verification. Checks format rules, detects fake UIDs, and explains Aadhaar number structure. Fully local validation with no data upload.
Crops Aadhaar card scans to the standard 86 x 54 mm card size with manual slider positioning and front/back sides. All processing is local and private.
Insert images (PNG, JPG) onto any page of your PDF document. Position and resize images anywhere on the page. Perfect for adding signatures, logos, or photos to documents.
Inserts page number labels at user-chosen positions (bottom-center, top-right, etc.) with configurable font, size, and starting offset. Documents stay on your device — editing and conversion run locally in your browser.
Type directly onto any PDF page — fill forms, add notes, stamp corrections without printing. Complete a 3-page application in minutes — local pdf-lib editing, unlimited saves.
Add one custom text caption onto a photo with color, size (10–300px slider), and X/Y position controls, composed on fixed social-size canvases — Instagram Post 1080×1080, Reel 1080×1920, YouTube Banner 2560×1440, Twitter Header 1500×500, or Custom. Exports PNG locally in your browser on Canvas; 3 free downloads a day.
Overlay one PDF on another, alternate-merge two documents, combine pages into sheets, apply booklet layout, invert colors, or extract pages as ZIP images.
Encrypt text using AES symmetric encryption with a passphrase. Generate ciphertext that can be safely transmitted or stored. Code never leaves your device — formatting and validation run locally in your browser.
Computes exact age in years, months, and days from a given birth date relative to any target date. Numbers never leave your device — every calculation runs locally in your browser.
Remove and replace image backgrounds with edge-aware detection — no green screen needed. Sellers shoot product photos on any table, then swap to clean white. Runs locally on canvas — free to start, fair limits.
Chat with any PDF: ask questions, get answers, and extract insights with intelligent in-browser search. Students quiz a textbook chapter in minutes — free to start.
Turn a job description plus your resume into a tailored cover letter that mirrors the employer's keywords. Applicants generate a first draft in a minute — 1 credit per letter, sign in free for 5.
Score text for AI authorship with burstiness, repetition, and trigger-phrase analysis — percentage plus per-section breakdown. Teachers screen a 2,000-word essay in seconds — runs locally, free to start with fair limits.
Chat with PDFs, Word files, and text docs using RAG: files index into a vector store and you ask natural-language questions. Researchers query 50-page reports in seconds — sign in free, 1 credit per answer.
Rewrite stiff AI-sounding text into natural human-like prose in 5 tones — casual, professional, friendly, natural, storytelling. Bloggers convert robotic drafts into readable posts — runs locally, free to start with fair limits.
Turn text prompts into high-resolution images with three engines: free Pollinations drafts, 1-credit FLUX drafts, and 5-credit Gemini HD for Pro. Designers prototype hero art in seconds — free to start, sign in for credits.
Rewrite sentences and paragraphs while preserving meaning — students, writers, and marketers rephrase drafts in 4 tones (Standard, Fluent, Formal, Creative). Runs on AI text generation at 1 credit per rewrite — sign in free for a 5-use trial.
Design click-optimized YouTube thumbnails by compositing bold text, cutout images, and effects on a 1280x720 smart canvas. Creators A/B-test two variants per video — runs locally, free to start with fair limits.
Translate text between 16 languages with automatic source detection via the AI API. Bloggers localize a 500-word post in seconds — 1 credit per translation, sign in free for 5.
Evaluate arithmetic algebra expressions with + − × ÷, parentheses and decimals — digits-only evaluator, no variables. Check homework before class — free, local, no signup.
Compute Annual Contract Value by dividing total contract value by contract years — know deal size trends. Track enterprise motion quarterly — free, local, no signup.
Send HTTP requests from your browser — custom headers, bodies, params, saved collections, and one-click cURL/Fetch/Axios snippets. Developers debug a REST endpoint without leaving the tab — runs locally, free to start.
Generate structured changelogs from API version diffs. Categorize changes as Added, Changed, Deprecated, Removed, Fixed, or Security.
Estimate API bills from request volumes and price-per-million — OpenAI and Stripe presets included. Forecast a 1M-request month before committing — local math, free, no signup.
Compare two OpenAPI specs side-by-side to detect breaking changes, new endpoints, removed fields, and modified schemas between versions.
Turn endpoint descriptions into clean API docs with parameters, responses, and curl samples. Document as you build, not after — local generation, free, no signup.
Toolzum is 1070+ free utilities for PDF, images, video, audio, AI, text, and code. Most run entirely on your device: your file loads into browser memory, gets processed locally, and downloads straight back — nothing uploaded, no account needed to start. Tools that need the network (AI answers, live lookups, currency rates) are clearly marked, so you always know what leaves your device before you run anything sensitive.
Find tools three ways: search above by task, browse by file format, or compare formats head-to-head in comparisons. Every ceiling is listed honestly on the limits page, offline behavior on the offline page, and the privacy model — with a recipe to verify it yourself — in the Trust Center.