Captions, titles and music
Cut, arrange and layer video, photos, music and text on a timeline, then export an MP4 — all in your browser.
- Multi-track timeline
- Text, music and captions
- MP4 export, no watermark
534 tools · 100% in your browser
The online toolkit that keeps your data on your device
Fast, reliable utilities for developers, designers, writers and teams — JSON, PDF, images, audio, video and more. No installs, no sign-up, and your files never leave your computer.
- Free to use
- No account required
- Works on any device
534Free online tools
23Categories, one per job
0Files uploaded to a server
NoneSign-up or install needed
Full-window apps
More than quick tools — whole apps in a tab
A video editor, a mind map, a whiteboard and an e-book reader, each with the whole window to work in. Your projects and books are kept in this browser, so you can close the tab and carry on later.
Brainstorm ideas as a mind map with the keyboard, then export PNG, SVG, Markdown or OPML.
- Keyboard-first editing
- Drag to reorganise branches
- PNG, SVG, Markdown, OPML
An endless canvas to sketch, draw shapes and arrows, and stick notes on — export PNG or SVG.
- Endless canvas
- Shapes, arrows and sticky notes
- Export PNG or SVG
Read EPUB, MOBI, AZW3, FB2, CBZ comics and TXT novels in your browser, with a library, bookmarks, highlights, word look-up and read aloud.
- EPUB, MOBI, AZW3, FB2, CBZ and TXT
- Tap a word to look it up
- Highlights, bookmarks, read aloud
Tool categories
Everything you need, organised by job
Pick a category to see its recommended tools first, then everything else it offers.
Developer Tools
61 toolsJSON, regex, UUID, JWT, DNS and WHOIS look-ups and other everyday developer utilities.
View all developer toolsEncoding & Encryption
20 toolsBase64, hashes, AES, URL and Unicode encoding.
View all encoding & encryptionDate & Time
17 toolsTimestamps, countdowns, date differences and world clocks.
- Unix Timestamp Converter
- World Clock & Meeting Planner
- Countdown Timer
- Date Calculator — Add Days & Working Days
Photo Filters & Effects
25 toolsPhoto filters, LUTs, curves, sharpening, noise reduction and artistic effects.
View all photo filters & effectsCollage & Print Layout
10 toolsPhoto collages, print layouts, contact sheets, long screenshots, posters and photo mosaics.
- Photo Collage Maker
- Photo Print Layout — Several Photos per Sheet
- Long Screenshot Stitcher
- Combine Images — Stitch Photos Together
PDF Tools
27 toolsMerge, split, compress, convert, protect and edit PDF files without uploading them.
- Merge PDF — Combine PDF Files
- Compress PDF — Reduce File Size
- Split PDF
- PDF to JPG — Convert PDF to Images
Audio Tools
23 toolsTrim, join, convert, normalise and analyse audio files.
- AI Voice Generator
- Speech to Text
- Audio Trimmer — Cut MP3, WAV & More
- Audio Converter — to WAV, FLAC & M4A
Video Tools
32 toolsTrim, crop, compress, convert and record video in the browser.
- Video Editor — Multi-Track Timeline
- Video Compressor — Reduce File Size
- Video Trimmer — Cut MP4, MOV & WebM
- Video Converter — MOV, MKV, WebM to MP4
SEO Tools
17 toolsMeta tags, schema markup, llms.txt, robots.txt, sitemaps, redirects and on-page checks.
- On-Page SEO Checker
- Meta Tag & Open Graph Generator
- Schema Markup Generator (JSON-LD)
- llms.txt Generator & Validator
Web3 & Blockchain
35 toolsEthereum, Bitcoin and Lightning: ABI encoding, transaction, invoice and signature decoders, wallets and contract tools.
- ABI Encoder & Decoder
- Read Contract — Call View Functions
- Safe Transaction Hash Verifier
- Ethereum Transaction Lookup
Maps & GPS
17 toolsGPS coordinates, maps, GPX tracks, distances, areas and sunrise times.
View all maps & gpsTravel Tools
14 toolsRoad trip itineraries, Schengen days, trip expenses, flight times, jet lag, packing lists, plugs, sizes and passports.
View all travel toolsFinance & Investing
37 toolsMortgage, car, savings and business calculators, plus stock, option and bond tools, charts with indicators and currencies.
- Loan & Mortgage Calculator
- House Affordability Calculator
- Compound Interest Calculator
- Savings Goal Calculator
Maker & Workshop
14 toolsCut list optimizers, box dielines, laser-cut boxes, STL, G-code and DXF viewers, SVG to DXF, 3D-print costs, resistor codes and workshop calculators.
- Cut List Optimizer — Sheet Cutting Layout
- Laser Cut Box Generator — Finger Joint Box
- STL Viewer — View STL, OBJ & 3MF Files Online
- G-code Viewer — 3D Printer, CNC & Laser
Home & Construction
12 toolsConcrete, paint, tile, flooring, mulch, roofing, stairs, fencing and heating — how much to buy.
- Concrete Calculator — Yards, Metres & Bags
- Square Footage Calculator
- Paint Calculator — How Much Paint for a Room
- Tile Calculator — Tiles, Grout & Adhesive
Shipping & Logistics
6 toolsContainer load plans, pallet patterns, CBM, volumetric weight, SSCC and GS1-128 labels, and Incoterms.
- Container Load Planner — 3D Loading Calculator
- Pallet Calculator — Cartons per Pallet & Pallets per Container
- CBM Calculator — Shipment Volume & Weight
- Dimensional Weight Calculator — Volumetric & Chargeable Weight
Lab Calculators
9 toolsMolarity, dilutions, molar mass, buffers, PCR mixes, DNA sequences, cell counts, plate maps and centrifuge speeds.
- Molarity Calculator — Mass, Volume & Concentration
- Dilution Calculator — C1V1 = C2V2 & Serial Dilutions
- DNA Sequence Tools — Reverse Complement, Tm, Translate
- PCR Master Mix Calculator
Kids & Classroom
17 toolsPrintable worksheets and classroom helpers for parents and teachers.
- Math Worksheet Generator — Printable PDF with Answer Key
- Handwriting Worksheet Maker — Letter, Number & Name Tracing
- Flashcard Maker — Printable Two-Sided Flashcards
- Word Search Maker — Printable Puzzle with Answer Key
Math & Geometry
23 toolsAlgebra, geometry, statistics and number tools — with the working shown for every answer.
- Scientific Calculator
- Percentage Calculator
- Quadratic Equation Solver
- Triangle Calculator — Solve Any Triangle
Health & Fitness
20 toolsBody composition, calories and macros, training, cycles and pregnancy — every formula named and shown.
- BMI Calculator
- Calorie Calculator (BMR & TDEE)
- Ideal Weight Calculator
- Body Fat Calculator (US Navy Method)
Calculators & Reference
31 toolsEveryday calculators, unit converters and quick-reference tables.
- Unit Converter
- Discount Calculator
- Fuel Economy Converter — MPG, L/100km & km/L
- Salary to Hourly Calculator
Most popular
Start with the tools people use most
Why FD Tools
Professional results without handing over your data
Upload sites keep a copy of whatever you give them. These tools do the work where your data already is — on your device.
Private by design
Text and files are processed by your own browser. Nothing is uploaded, so there is no copy on a server to leak or retain.
Instant results
Tools update as you type or the moment a file is dropped — no queues, no upload progress bars, no waiting on a server.
AI on your device
Speech to text and natural voice generation run locally with WebAssembly or WebGPU. Your recordings stay yours.
Built for real work
Batch image processing with ZIP export, a complete PDF toolkit, a multi-track video editor, and collaborative whiteboards.
Works everywhere
Any current browser on Windows, macOS, Linux, iOS or Android. Nothing to install, nothing for IT to approve.
Optional sync
Sign in with Google or GitHub to carry favorites and tool settings across devices — never the content you work on.
How it works
Three steps, all in your browser
Step 1
Find the tool
Search by name or browse a category. Every tool has its own page, so you can bookmark the ones you use.
Step 2
Add your input
Paste text or drop a file. It is read into the page on your device — not sent anywhere.
Step 3
Get the result
Copy the output or download it, one file or a whole batch at a time. That is all there is to it.
Is it really free?
Yes. Every tool is free to use with no sign-up, no watermark and no daily limit. An optional FD Pro membership adds a cloud library for whiteboards and mind maps; nothing else is held back.
Are my files uploaded anywhere?
No. The tools run in your browser, so the text you paste and the images, PDFs, audio and video you open are processed on your own device and never sent to a server. The few exceptions say so on the tool: My IP asks our server for your address, the map tools load their background map from OpenStreetMap, the live Web3 tools (gas, ENS, balances, contracts, prices) ask a public blockchain node, Sourcify or CoinGecko for public data, the market tools ask the US Treasury, the World Bank or Twelve Data (with your own key) for public prices and rates, the road trip planner looks up places you search for on OpenStreetMap and road routes on openrouteservice (with your own key), and whiteboards or mind maps you choose to share are end-to-end encrypted first.
Do I need to create an account?
No. Signing in with Google is optional and only syncs your favorites and tool settings between devices — never what you type or open in a tool.
Which browsers are supported?
Any current version of Chrome, Edge, Safari or Firefox, on desktop or mobile. The video tools use the WebCodecs API and the AI speech tools download their model once, so they work best on a recent browser and a desktop-class device.
Is it safe for confidential work?
Because the work happens locally, the tools suit contracts, client files, credentials and internal data that must not leave your machine — there is no server-side copy to leak, retain or train on.
Find the right tool in seconds
534 tools, no account, and nothing to install. Press / anywhere to search.