Every tool on Altto, in one place.
44 free tools for PDFs, images, documents and everyday data formats — every one of them runs entirely in your browser. Nothing is ever uploaded.
PDF tools
Split, merge, compress, unlock, rotate and reorganize PDF files.PDF to Word
Turn a PDF into an editable .docx file.
PDFUnlock PDF
Remove a password from a PDF you own.
PDFPDF to JPG
Turn each PDF page into a JPG image.
PDFMerge PDF
Combine multiple PDFs into one file.
PDFCompress PDF
Shrink a PDF’s file size.
PDFSplit PDF
Break a PDF into separate files.
PDFRotate PDF
Fix sideways or upside-down pages.
PDFDelete PDF Pages
Remove pages you don’t need.
PDFExtract PDF Pages
Pull specific pages into a new PDF.
PDFAdd Page Numbers
Stamp page numbers onto a PDF.
PDFCrop PDF
Trim the margins on every page.
PDFWatermark PDF
Stamp a diagonal text watermark onto every page of a PDF.
Image tools
Convert, compress and edit JPG, PNG, WebP and HEIC images.Image to PDF
Combine JPGs or PNGs into one PDF.
ImagesHEIC to JPG
Open iPhone photos anywhere.
ImagesWebP to JPG
Turn WebP images into JPGs.
ImagesWebP to PNG
Turn WebP images into PNGs.
ImagesPNG to JPG
Convert PNG images to JPG.
ImagesJPG to PNG
Convert JPG images to PNG.
ImagesCompress Image
Shrink JPG or PNG file size.
ImagesBackground Remover
Remove a photo’s background with on-device AI.
ImagesMeme Generator
Add top and bottom captions to an image.
ImagesGIF Maker
Turn a set of images into an animated GIF.
ImagesImage Resize
Resize a JPG or PNG by percentage or exact pixels.
ImagesImage Cropper
Crop a JPG or PNG freely or to a locked aspect ratio.
Document conversion
Convert between PDF, Word, PowerPoint, Excel, HTML and plain text.Word to PDF
Turn a .docx file into a PDF.
DocumentsPDF to PowerPoint
Turn PDF pages into slides.
DocumentsPowerPoint to PDF
Turn a .pptx file into a PDF.
DocumentsPDF to Excel
Pull tables out into a spreadsheet.
DocumentsExcel to PDF
Turn a spreadsheet into a PDF.
DocumentsTXT to PDF
Turn plain text into a PDF.
DocumentsHTML to PDF
Turn a web page into a PDF.
Generators & utilities
QR codes, barcodes, passwords, word counts, text to speech and data-format conversion.QR Code Generator
Make a free QR code.
GeneratorsPassword Generator
Generate a strong random password.
GeneratorsWord Counter
Count words, characters and reading time.
GeneratorsCSV to JSON
Convert a CSV file into JSON.
GeneratorsJSON to CSV
Convert JSON into a CSV file.
GeneratorsText to Speech
Have your browser read text aloud.
GeneratorsBarcode Generator
Generate a printable 1D barcode.
GeneratorsColor Picker
Pick a color and get its HEX, RGB and HSL codes.
GeneratorsUnit Converter
Convert length, weight, temperature and more.
GeneratorsLorem Ipsum Generator
Generate placeholder text by paragraph, sentence or word.
GeneratorsCase Converter
Convert text between UPPERCASE, camelCase, snake_case and more.
GeneratorsFavicon Generator
Turn an image into a full favicon.ico and app-icon package.
GeneratorsBMI Calculator
Calculate your Body Mass Index, category and healthy weight range.