Every Free Tool You Actually Need
PDF, images, AI writing, calculators, developer tools and more — all free, all instant, no downloads.
Why developers, writers, and finance professionals rely on FreeToolKit
Every tool on this site runs entirely in your browser — no uploads, no accounts, no per-use charges. We built FreeToolKit because good utilities should be free and fast. The guides in our blog are written by practitioners: CPAs who actually do tax planning, engineers who debug JSON at 2 AM, and security analysts who review document workflows for a living. Whether you need a one-off PDF merge or a mortgage calculation to sanity-check a quote, the right tool is a single click away.
PDF & Documents(11)
PDF Merger
Merge multiple PDF files into one. Drag to reorder pages. 100% free, runs in your browser.
PDF to JPG Converter
Convert each PDF page to a high-quality JPG image. Download all pages as a ZIP file.
PDF Editor
Edit PDFs online — add text, boxes, highlights, signatures and annotations. Free, browser-based, no upload needed.
PDF Compressor
Compress PDF file size without losing quality. Choose compression level. Free, instant, private.
PDF Password Remover
Remove password from a PDF file instantly. Unlock protected PDFs for free in your browser.
PDF Splitter
Split a PDF into individual pages or custom page ranges. Free, instant, no upload required.
Images to PDF
Convert JPG, PNG, WebP images to a PDF file. Drag, reorder, and merge into one PDF instantly.
PDF to Word Converter
Convert PDF files to editable Word documents instantly. Free, private, browser-based.
Image Tools(6)
Image Resizer
Resize images online to any dimension. Crop, scale, maintain aspect ratio. Free and instant.
Image Converter
Convert images between formats: JPG, PNG, WebP, GIF. Free, instant, no quality loss.
Meme Generator
Create memes with custom text on popular templates or your own images. Download instantly as PNG.
Image Compressor
Compress images online for free. Reduce JPG, PNG, WebP file size while keeping quality.
Background Remover
Remove the background from any image instantly. Free, private, no sign-up required.
Image to Text Converter
Extract text from images using OCR. Supports 11 languages. Free and private.
Text & Writing(6)
AI Content Detector
Detect whether text was written by AI or a human. Analyzes writing patterns and signals. Powered by Claude AI.
Paraphrasing Tool
Paraphrase and rewrite any text with AI. Multiple modes: formal, casual, creative. Free tool.
Grammar Checker
Check grammar, spelling and style instantly. AI-powered writing assistant. Free with no sign-up.
Word Counter
Free online word counter
Text Case Converter
Free online text case converter
Duplicate Line Remover
Remove duplicate lines from text instantly. Sort lines, count occurrences, trim whitespace.
Finance & Calculators(9)
Currency Converter
Free online currency converter
BMI Calculator
Free online bmi calculator
Mortgage Calculator
Free online mortgage calculator
Age Calculator
Free online age calculator
Paycheck Calculator
Free online paycheck calculator
Tip Calculator
Free online tip calculator
Compound Interest Calculator
Free online compound interest calculator
Retirement Calculator
Free online retirement calculator
Developer Tools(7)
SEO & Web(4)
IP Address Lookup
Look up any IP address location, ISP, timezone and VPN status. Your own IP detected automatically.
QR Code Generator
Free online qr code generator
WHOIS Lookup
Look up domain age, registration date, expiry and full WHOIS record for any domain name.
Website Speed Checker
Check your website speed and Core Web Vitals score using Google PageSpeed Insights.
AI Tools(6)
Text to Speech
Convert text to natural-sounding speech. 50+ voices, 30+ languages. Download as MP3. Free.
Resume Builder
Build a professional resume online. Choose a template, add your info and download as PDF. Free, no sign-up.
Business Name Generator
Generate creative business names with AI. Check domain availability. Export to CSV. 50 names instantly.
Hashtag Generator
Generate relevant hashtags for Instagram, TikTok, LinkedIn, Twitter and YouTube. AI-powered.
AI Writing Assistant
Free online ai writing assistant
Caption Generator
Generate engaging captions for Instagram, TikTok, LinkedIn and more. Choose tone and style. AI-powered.
Converters(5)
Unit Converter
Free online unit converter
Color Picker
Pick colors, get HEX, RGB, HSL and CMYK values. Generate shade palettes. Pick colors directly from images.
Number to Words Converter
Free online number to words converter
Barcode Generator
Generate EAN, QR, Code128, UPC, Code39, ITF and more barcodes. Download PNG or SVG.
Invoice Generator
Create professional invoices as PDF. Add logo, line items, tax, discount. Download or share free.
Utilities(7)
URL Shortener
Free online url shortener
Stock Image Search
Search and download free stock photos from Unsplash. Commercial-use friendly. No attribution required.
YouTube Thumbnail Downloader
Download any YouTube video thumbnail in HD, Full HD or SD quality. Free, instant, no sign-up.
TikTok Watermark Remover
Free online tiktok watermark remover
Random Data Generator
Generate random names, emails, addresses, phone numbers, dates. Export as CSV. Free tool.
Pay Stub Generator
Generate professional pay stubs with accurate tax calculations. Download as PDF instantly. Free.
Video Downloader
Download videos from YouTube, Instagram, Twitter, TikTok and more. Best tools curated.
From Our Developer Blog
Free guides on PDF, images, code, finance tools and more
developer
Vibe Coding Explained: What It Actually Means (And Why Senior Devs Are Divided)
Vibe coding went from Twitter meme to real workflow in under a year. Here's what it actually is, where it works, and where it quietly fails.
SEO
Technical SEO Audit: What to Check and How to Fix It
A practical walkthrough of technical SEO issues that actually prevent pages from ranking, with specific fixes for each problem.
security
JWT Security: The Mistakes That Get Apps Hacked and How to Avoid Them
JWTs are everywhere and frequently misconfigured. Here are the most common JWT security mistakes developers make and exactly how to fix them.
Meet the contributors
Guides written by practitioners — not generalists.
Priya Shah
Senior Software Engineer
Priya has nine years of experience building distributed systems and developer tooling at two B2B SaaS companies. She writes about APIs, JSON/JWT workflows, regex, DevOps, and the small utilities that make debugging faster at 2am.
Marcus Reid
Finance Writer & CPA
Marcus is a licensed CPA with twelve years advising on personal finance, small-business tax, and mortgages. He breaks down calculators (mortgage, retirement, paycheck) into the decisions they actually help you make, not the math behind them.
Elena Kovac
Security & Privacy Analyst
Elena spent eight years as an application security analyst, auditing document-handling pipelines and password hygiene at mid-market firms. She covers PDFs, password generation, file-processing privacy, and the trade-offs between convenience and safety online.
Daniel Osei
Content & SEO Strategist
Daniel has ten years in technical SEO and editorial strategy for tools-focused sites. He writes about image optimization, writing utilities, AI-assisted content workflows, and how to pick the right tool without the marketing gloss.
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