Fast, free, no-nonsense online tools
A growing library of fast, free, privacy-friendly online tools. Converters, calculators, formatters, validators and generators that just work.
1029 free tools and counting
Popular tools
AI Background Remover
Remove the background from a photo automatically with AI, right in your browser. Get a transparent PNG or a solid color. Nothing is uploaded.
AI Object Cutout
Click any object in a photo and AI cuts it out exactly. SlimSAM runs in your browser, nothing uploaded. Refine with clicks, download a transparent PNG.
Document Scanner
Scan documents from a photo in your browser: automatic edge detection, perspective correction, and enhancement, then export as a PNG or a PDF.
Object Detector
Detect objects in any photo with YOLO11, right in your browser. Draw labeled boxes, count what it finds, and download the result. Nothing is uploaded.
Audio Transcriber
Transcribe audio to text in your browser with OpenAI's Whisper AI. Get timestamps, export SRT, VTT or TXT, pick a quality level. Nothing is uploaded.
AI Translator
Translate text between 100 languages with AI in your browser. Pick a source and target language. Nothing is uploaded; works offline after setup.
Image to Text (OCR)
Extract text from an image with OCR, right in your browser. Supports many languages, copy or download the result. Your image is never uploaded.
AI Image Upscaler
Upscale and enhance images with AI in your browser. Increase resolution 2x or 4x with sharp detail, no blur. Free, private, nothing uploaded.
Newly launched
See all →555 Timer Calculator
Calculate 555 timer astable frequency, period, high and low times and duty cycle from R1, R2 and the timing capacitor. Free oscillator design helper.
Add Business Days Calculator
Add or subtract working days from a date, skipping weekends and any holidays you list. See the result date and its day of the week instantly.
Add Days Calculator
Add or subtract calendar days from any date and see the result with its day of the week. Free, instant and works for past or future dates.
Age Difference Calculator
Find the age gap between two birthdates in years, months and days, plus the total day count. Free, private and works for any pair of dates.
AI Alt Text Generator
Generate accessible alt text for any image with AI, right in your browser. Copy clean alt text or a ready HTML img tag. Nothing is uploaded.
AI Background Remover
Remove the background from a photo automatically with AI, right in your browser. Get a transparent PNG or a solid color. Nothing is uploaded.
AI Depth Map Generator
Turn any photo into a depth map with AI, right in your browser. Pick a colormap, invert it, and download a PNG. Nothing is uploaded.
AI Image Upscaler
Upscale and enhance images with AI in your browser. Increase resolution 2x or 4x with sharp detail, no blur. Free, private, nothing uploaded.
Browse by category
Converters
Convert between data formats, units, colors and encodings. Fast, accurate, no upload required for client-side formats.
76 toolsImage Tools
Inspect and clean images privately in your browser: read EXIF and metadata, check dimensions and format, and strip GPS and camera data. Nothing is uploaded.
55 toolsFile Tools
Inspect any file in your browser: identify the type from its bytes, view a hex dump, list a ZIP's contents, measure entropy, extract strings and verify checksums. Nothing is uploaded.
29 toolsAudio Tools
Read audio metadata in your browser: ID3 tags, bitrate, duration, sample rate and format for MP3, WAV and FLAC. Private, with nothing uploaded.
16 toolsPDF Tools
Inspect PDF files privately in your browser: page count, document metadata, version and encryption status. Read entirely on your device with nothing uploaded.
16 toolsText Tools
Clean, count, transform and compare text. Remove line breaks, change case, dedupe lines and more.
92 toolsDeveloper Tools
Formatters, encoders, decoders and generators for developers. JSON, JWT, Base64, hashes, UUIDs and regex.
168 toolsSecurity Tools
Practical security tooling for developers and pentesters: header and CSP analyzers, hash and CVSS tools, TOTP and HMAC generators, and helpers for authorized testing.
15 toolsSEO Tools
Practical SEO utilities: meta tag generators, schema builders, slug and robots.txt generators, SERP helpers.
42 toolsFinance Calculators
Money math made simple: loans, interest, savings, tax and retirement calculators with clear breakdowns.
96 toolsBusiness Tools
Run the numbers for your business: margins, breakeven, pricing, ROI and commission calculators.
41 toolsHR & Office
Workplace utilities: timesheet and overtime calculators, letter and document generators for HR teams.
34 toolsDocuments & Legal
Generate invoices, quotations, NDAs and contracts with clean, professional, ready-to-send formatting.
30 toolsAI Utilities
AI-assisted writing and prompt tools: rewriters, prompt builders and formatters for everyday work.
0 toolsEcommerce Tools
Seller math: marketplace fees, profit, margin and shipping calculators for Amazon, Etsy, eBay and more.
22 toolsHealth & Fitness
Evidence-based health and fitness calculators: BMI, BMR, TDEE, body fat, macros, pace and more.
42 toolsDate & Time
Work with dates and times: age, date differences, business days, durations, time zones and countdowns.
40 toolsMath
Everyday and advanced math: fractions, ratios, primes, statistics, roman numerals, equations and more.
86 toolsValidators
Validate and verify codes, numbers and identifiers: credit cards, IBAN, ISBN, barcodes, routing numbers and more, with the correct checksums.
15 toolsHome & DIY
Plan home and DIY projects with confidence: estimate paint, flooring, tile, mulch, concrete and other materials, size an air conditioner, and more.
41 toolsScience & Engineering
Physics and electronics calculators: Ohm's law, resistor color codes, density, speed and distance, energy and more, with the formulas shown.
55 toolsPhotography
Camera and lens calculators for photographers: depth of field, hyperfocal distance, crop factor, field of view, exposure value and more, with the optics explained.
12 toolsAutomotive
Car and engine calculators for drivers and gearheads: gear ratios, gas mileage, engine displacement, tire size, power to weight and compression ratio, with the math shown.
6 tools