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Free file tools
69 free tools for PDFs, images, documents and everyday data formats, and every one of them runs entirely in your browser. Nothing is ever uploaded.
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Most used
Altto apps
All tools
AI tools On-device
AI that runs on your own device — your files are never uploaded. The AI model downloads once, then your browser keeps it.
Summarise PDF
Get the key points of a PDF, Word file or text with on-device AI.
AI
Translate Document
Translate a PDF or Word file into 27 languages on your device.
AI
Speech to Text
Transcribe audio or video into text or subtitles, on your device.
AI
AI Image Upscaler
Enlarge a photo 2× or 4× with sharper detail, on your device.
AI
Background Remover
Remove a photo’s background with on-device AI.
Tests
Free brain and skill tests with instant results and no sign-up. Challenge a friend, then see if you make this week’s leaderboard.
Tests IQ Test
Take a free 20-question IQ test and get your score instantly.
Tests Typing Speed Test
Check your words per minute and accuracy in 1 minute, then challenge a friend.
Tests Reaction Time Test
Tap when it turns green and see how fast your reflexes are, in milliseconds.
Tests Personality Test
Take a free Big Five personality test and see your five trait scores instantly.
Tests Weekly Leaderboards
This week’s top scores on the IQ, typing and reaction time tests.
PDF tools
Split, merge, compress, unlock, rotate and reorganize PDF files.
PDF Scan to PDF
Photograph pages with your phone and save one clean PDF.
PDF Organise PDF
Reorder, rotate, delete, split and merge pages on one screen.
PDF PDF to Word
Turn a PDF into an editable .docx file.
PDF Edit PDF
Change the words in a PDF, in its own font, and add text, pictures and shapes.
PDF Unlock PDF
Remove a password from a PDF you own.
PDF PDF to JPG
Turn each PDF page into a JPG image.
PDF Merge PDF
Combine multiple PDFs into one file.
PDF Compress PDF
Shrink a PDF’s file size.
PDF Split PDF
Break a PDF into separate files.
PDF Add Page Numbers
Stamp page numbers onto a PDF.
PDF Crop PDF
Trim the margins on every page.
PDF Sign PDF
Add your signature, initials and date, and fill in form boxes.
PDF Watermark PDF
Stamp a diagonal text watermark onto every page of a PDF.
PDF PDF to Black and White
Turn a colour PDF into greyscale or pure black and white.
PDF Flatten PDF
Lock form answers and comments into the page.
PDF Remove PDF Metadata
See and strip hidden author, software and date details.
PDF PDF Page Counter
Count the pages in one PDF or a whole batch at once.
Image tools
Convert, compress and edit JPG, PNG, WebP and HEIC images.
Images Image Converter
Any image to JPG, PNG or WebP, with resizing. Mix formats in one go.
Images Image to PDF
Combine JPGs or PNGs into one PDF.
Images HEIC to JPG
Open iPhone photos anywhere.
Images Compress Image
Shrink JPG or PNG file size.
Images Meme Generator
Add top and bottom captions to an image.
Images GIF Maker
Turn a set of images into an animated GIF.
Images Image Resize
Resize a JPG or PNG by percentage or exact pixels.
Images Image Cropper
Crop a JPG or PNG freely or to a locked aspect ratio.
Images Passport Photo Checker
Check a photo against the UK online passport photo rules.
Images AI Image Checker
See if a picture says it was made or edited with AI.
Document conversion
Convert between PDF, Word, PowerPoint, Excel, HTML and plain text.
Documents Convert to PDF
Word, Excel, PowerPoint, images and more into one PDF, in any mix.
Documents Word to PDF
Turn a .docx file into a PDF.
Documents PDF to PowerPoint
Turn PDF pages into slides.
Documents PowerPoint to PDF
Turn a .pptx file into a PDF.
Documents PDF to Excel
Pull tables out into a spreadsheet.
Documents Excel to PDF
Turn a spreadsheet into a PDF.
Documents PDF to Text
Pull the text out of a PDF as a plain .txt file.
Documents Excel to CSV
Save any sheet of an Excel file as a CSV.
Documents Skype Chat Viewer
Read and save the chats in your Skype export file.
Documents Publisher (.pub) Opener
Open a .pub file without Publisher.
Documents Publisher (.pub) to Word
Turn a .pub file into a Word document.
Documents Publisher alternative
Open and edit .pub files, or make flyers, newsletters and posters. Save as PDF.
Documents Word alternative
Open, edit and save Word documents, or start a CV or letter. Save as Word or PDF.
Documents E-invoice Viewer
Read Factur-X, ZUGFeRD, XRechnung and UBL e-invoices.
Documents CV Builder
Make a CV free and download it as PDF or Word. No sign-up, no paywall.
Free templates for the Publisher alternative: certificate, 2027 calendar, flyer, newsletter, invitation, menu, greeting card and business card.
Generators & utilities
QR codes, barcodes, passwords, word counts, text to speech and data-format conversion.
Generators AI Debate
Suggest a subject and watch nine AI models argue it out.
Generators QR Code Generator
Make a free QR code.
Generators Password Generator
Generate a strong random password.
Generators Word Counter
Count words, characters and reading time.
Generators CSV to JSON
Convert CSV to JSON, or JSON to CSV.
Generators Text to Speech
Have your browser read text aloud.
Generators Barcode Generator
Generate a printable 1D barcode.
Generators Color Picker
Pick a color and get its HEX, RGB and HSL codes.
Generators Unit Converter
Convert length, weight, temperature and more.
Generators Lorem Ipsum Generator
Generate placeholder text by paragraph, sentence or word.
Generators Case Converter
Convert text between UPPERCASE, camelCase, snake_case and more.
Generators Favicon Generator
Turn an image into a full favicon.ico and app-icon package.
Generators BMI Calculator
Calculate your Body Mass Index, category and healthy weight range.
Generators Invoice Generator
Create a professional PDF invoice with automatic tax and totals.
Generators MTD Spreadsheet Maker
Make a Making Tax Digital records spreadsheet for HMRC.
Generators Do I Need MTD?
Check if and when Making Tax Digital applies to you.
Generators Payments on Account
Work out your January and July Self Assessment payments.