AltFTool — 2,787 Free Online Tools for Real Work
AltFTool is a free website of online tools — converters, PDF and image editors, calculators, developer utilities, generators and browser games — that open straight in a browser tab with no account and no paid tier.
Find the right tool in seconds
Tip: press / or Ctrl K (⌘ K on Mac) to open search.
- No sign-up
- Free, no paid tier
- File tools stay in your browser
- Works on phone and desktop
Browse by Category
Start Where Your Work Is
Six of the 18 categories. Every one opens in a browser tab — no account, no install.
Image & Video
129 free tools
Resize, compress, upscale and restore photos without uploading them.
Browse allPDF & Documents
38 free tools
Merge, split, compress and unlock PDFs right in the browser.
Browse allConverters
101 free tools
Units, currencies, time zones, file and data formats, both ways.
Browse allCalculators
357 free tools
Everyday maths, money, health and date calculators with the formula shown.
Browse allDeveloper
400 free tools
Format, validate and decode JSON, SQL, regex and tokens locally.
Browse allAI Tools
67 free tools
Summarise text, transcribe speech and make passport photos with AI.
Browse all
By Task
What Do You Want to Do?
Pick a job and get the tools that do it — compress, convert, edit a PDF, calculate, create or check.
Compress
Make files smaller for email, forms and uploads.
More in Image & Video- Image CompressorCompress images instantly and reduce file size efficiently.
- PDF CompressorCompress PDF files to reduce file size while maintaining quality.
- Video CompressorCompress videos in your browser with quality presets, resolution caps, audio control, and preview export.
- Image ResizerResize images with custom dimensions, social media presets, fit/crop modes, batch processing, and format export.
- Image CropperCrop your image according to your needs
- SVG OptimizerShrinks an SVG file by removing editor metadata, comments and default attributes and by rounding coordinate precision, without changing how it renders.
Convert
Change a file or a unit from one format to another.
More in Converters- HEIC to JPG ConverterConvert Apple HEIC/HEIF images into standard JPG or PNG files locally in your web browser. Supports batch conversions, custom image quality, and ZIP exports.
- PDF to Word ConverterConvert text-based PDFs into editable Word DOCX files with page range, layout, preview, and export controls.
- Image to PDF ConverterConvert JPG, PNG, and other image formats to high-quality PDF documents. Drag and drop your images to create professional PDFs instantly.
- PDF to JPGConvert PDF pages to JPG, PNG or WebP images at 72–300 DPI. Pick pages from thumbnails, set quality and download one image or all as a ZIP.
- Unit ConverterConvert 71 units across length, weight, temperature, area, volume, speed, data and time.
- Currency ConverterConvert global currencies instantly using accurate real-time rates.
Edit PDF
Merge, split, reorder, annotate and unlock PDFs without uploading them.
More in PDF & Documents- PDF Merger ToolMerge multiple PDF files quickly into a single document.
- PDF Split ToolSplit PDFs by page, fixed batches, custom ranges, extraction, or page removal with browser-side ZIP/PDF export.
- PDF Page ReorderEasily rearrange, reorder, or delete pages from your PDF documents.
- PDF Annotation ToolAnnotate PDF files easily with highlights and notes.
- PDF Password RemoverRemove passwords from protected PDF files instantly and 100% locally in your browser. No data is ever uploaded to any server.
- Word / PPT / Excel to PDFConvert DOCX, PPTX, XLSX, CSV, and TXT documents into polished PDF files with previews and batch export.
Calculate
Money, health, study and date maths with the formula shown.
More in Calculators- Loan EMI CalculatorLoan EMI Calculator helps you calculate the monthly EMI of a loan.
- Income Tax CalculatorCompare India old and new tax regimes with deductions, rebate, surcharge, cess, and slab-wise breakup.
- SIP CalculatorEstimate SIP maturity value, invested amount, and wealth gain with annual step-up.
- GPA / CGPA CalculatorA smart academic calculator for Semester GPA, Overall CGPA, and Percentage prediction.
- BMI CalculatorCalculate your Body Mass Index
- Age CalculatorCalculates age based on birthdate
Create
Make QR codes, resumes, invoices, memes and signatures.
More in Generators- QR GeneratorGenerate QR codes instantly for links, text, and data.
- Resume MakerCreate a professional resume
- Invoice GeneratorCreate clean invoices with line items, tax, discount, totals, and print-ready output.
- Meme GeneratorCreate funny memes easily
- Signature MakerDraw, type or upload your signature and download it as a transparent PNG, white-background JPG or SVG, trimmed and sized for online forms.
- UPI QR Code GeneratorCreate a UPI payment QR code from a VPA, payee name and optional fixed amount, note and reference.
Check & secure
Strong passwords, 2FA codes and quick file checks.
More in Security & Privacy- Password GeneratorGenerate random, highly secure passwords with advanced character controls, live strength scoring, and entropy estimates. Everything runs in your browser — nothing is stored.
- Password Strength CheckerTest password strength locally with entropy math, crack-time estimates, and pattern warnings — nothing leaves your browser.
- 2FA AuthenticatorGenerate secure TOTP two-factor authentication codes in your browser. 100% client-side, works offline, RFC 6238 compatible.
- SHA-256 Hash GeneratorGenerate a SHA-256 hash of any text, computed securely in your browser.
- JWT DecoderDecode JWT header and payload claims instantly in the browser.
- PDF Digital Signature ValidatorInspect local PDF signature dictionaries, validate bounded ByteRange coverage, and hash the exact signed bytes without claiming certificate or CMS trust.
Spotlight
Tools People Search For
Count your steps, guess an age from a photo, pick lucky numbers or test a love match by photo. All free in your browser, with a few more like them below.
- HealthStep CounterFree online step counter and pedometer: your phone's motion sensor counts steps, with a daily goal, distance, calories and history. No app.Open tool
- AI funAge & Gender DetectorEstimate age and gender from a photo, video or your camera — in your browser, with a stability range and photo quality check.Open tool
- FunLucky Number GeneratorFair lucky number generator: quick picks for 16 lottery games with exact odds, a lottery lab (checker, odds, wheel, simulator), numerology, zodiac and custom draws.Open tool
- FunLove Compatibility by PhotosFree photo love test for couples, crushes and friends: two photos, a couple selfie or a group. Mood, face ratios and resemblance measured on your device.Open tool
Tool of the day
PDF Merger Tool
Merge multiple PDF files quickly into a single document.
Open this tool: PDF Merger ToolAlso worth a try
Editor's Picks
The Tools People Come Back For
Everyday jobs, one click away. Each opens in a new page with no sign-up.
PDF & images
More- Image CompressorCompress images instantly and reduce file size efficiently.
- PDF Merger ToolMerge multiple PDF files quickly into a single document.
- Image ResizerResize images with custom dimensions, social media presets, fit/crop modes, batch processing, and format export.
- PDF CompressorCompress PDF files to reduce file size while maintaining quality.
- HEIC to JPG ConverterConvert Apple HEIC/HEIF images into standard JPG or PNG files locally in your web browser. Supports batch conversions, custom image quality, and ZIP exports.
- Upscale ImageEnlarge an image in your browser using Lanczos, bicubic, bilinear or nearest-neighbour resampling with optional sharpening.
Calculators
More- Percentage CalculatorCalculate percentages, percentage change, increase, decrease, and ratios instantly.
- Age CalculatorCalculates age based on birthdate
- BMI CalculatorCalculate your Body Mass Index
- Loan EMI CalculatorLoan EMI Calculator helps you calculate the monthly EMI of a loan.
- SIP CalculatorEstimate SIP maturity value, invested amount, and wealth gain with annual step-up.
- GST CalculatorCalculate inclusive or exclusive GST with CGST, SGST, and IGST breakdowns.
Developer
More- JSON EditorValidate, format, minify, and convert JSON snippets.
- Regex TesterTest and validate regular expressions instantly with live results.
- JWT DecoderDecode JWT header and payload claims instantly in the browser.
- SQL FormatterFormat SQL queries with readable line breaks, configurable indentation and keyword case — entirely in your browser.
- UUID GeneratorGenerate secure unique UUIDs instantly for any application.
- Base ConverterConvert numbers between binary, octal, decimal, hex, and base36.
Everyday
More- Password GeneratorGenerate random, highly secure passwords with advanced character controls, live strength scoring, and entropy estimates. Everything runs in your browser — nothing is stored.
- QR GeneratorGenerate QR codes instantly for links, text, and data.
- Word & Character CounterCount words, characters, sentences, paragraphs, and reading time instantly.
- Invoice GeneratorCreate clean invoices with line items, tax, discount, totals, and print-ready output.
- Resume MakerCreate a professional resume
- Step CounterFree online step counter and pedometer: your phone's motion sensor counts steps, with a daily goal, distance, calories and history. No app.
Kits
Tools for What You Do
Ready-made sets for students, developers, creators and small businesses.
For students
Grades, attendance, citations and revision, sorted.
- GPA / CGPA Calculator
- Percentage Calculator
- Attendance Percentage Calculator
- Scientific Calculator
- Citation Generator
- More in Developer
For developers
Format, decode and test without leaving the browser.
- More in Image & Video
For creators
Resize, restore and upscale images for every platform.
- More in Finance & Business
For small business
Invoices, GST, loans and branding in a few clicks.
- More in Health & Fitness
For health and fitness
Steps, BMI, calories and water, tracked privately.
- More in PDF & Documents
For paperwork
PDFs, photos and forms ready to submit.
Organized tools for real work — free, no account, no upload for file tools.
2,787
Free browser tools across 18 categories
45
Browser games — puzzle, arcade, word, card and board
13
Labs experiments published while still being shaped
Explore AltFTool
More Than a Tool List
Studios, calculators, games, guides and directories that sit beside the tools.
Work & files
- PDF StudioMerge, split, compress and convert PDFs in the browser.
- Image StudioResize, compress, crop and convert images without uploading.
- AI Tools DirectoryHand-written notes on AI tools, sorted by what they do.
- Ask AltF AIDescribe a job in plain words and get pointed at the right tool.
- Authenticator2FA codes in your browser, RFC 6238, works offline.
Money & study
- CalculatorsMoney, health, maths and date calculators with the formula shown.
- SavingsDiscount finders, saving guides and money calculators.
- AltF CampusStudy tools, GPA maths and exam helpers for students.
- Free AlternativesFree options for popular paid apps, compared honestly.
- MarketplaceBuy and sell locally, with a resale price calculator, a listing checker and scam-safety guides.
Play & explore
Guides & help
Why It's Free
Why Every Tool Costs Nothing
No account, no paid tier, and file tools never leave your browser. Ads are what keep it that way.
No Account Needed
Every tool opens and runs straight in the browser — nothing to sign up for.
Always Free
No paid tier and no per-file metering. Ads are what keep the tools free.
File Tools Stay Local
PDF, image and converter tools run in your browser — the file is never uploaded.
Automate Repeat Work
Workflow templates, prompt workspaces and business service guides sit beside the tools.
Works Everywhere
Every tool runs on desktop and mobile browsers — no install required.
Ask AltF AI
Describe the tool you need and get an instant answer from the catalog.
For site owners
Grow Your Website
Places where a new website can get listed, sorted by type with link notes, so you can plan outreach without paying for a list.
Open the free backlink sites directoryHow to Use
Getting Started with AltFTool
No setup, no account. Search, open a tool, and get your result.
Open any tool instantly — no sign-up, no install.
Get your result right away. Ads keep it free.
AltFTool at a Glance
- What it is
- A free website of 2,787 online tools in 18 categories: PDF and image editors, converters, calculators, developer utilities, generators and 45 browser games.
- Paid plan?
- None. There is no paid tier and no per-file metering.
- Account needed?
- No — every tool opens and runs without signing in.
- Where files go
- File tools (PDF, image, converters) run in your browser and the file is not uploaded. Tools that need live data or a model — AI tools, language checkers, lookups — send your input to an API, and say so on their own page.
- Devices
- Any modern browser on desktop, tablet or phone, with nothing to install. Screen-recording tools need a desktop browser.
- Shows ads?
- Yes — ads are what keep the tools free.
FAQ
Frequently Asked Questions
Free tools. Zero sign-up.
Open AltFTool and start using converters, PDF and image editors, calculators, developer utilities and generators — right now, in your browser.