Private by design. Files stay on your device.
Everyday tools, without the upload
Diskbit helps you merge PDFs, turn files into PDFs, crop photos, make a password, and more. Free, open source, and built so anyone can use them. No account required.
PDF Tools
Merge, split, convert, and stamp PDF files on this page. Nothing is uploaded, and no account is needed.
Merge PDFs
Combine several PDF files into one document. Drag, drop, reorder, and download.
Open toolSplit PDF
Pull out the pages you need and save them as a new PDF. No upload.
Open toolCompress PDF
Make a PDF smaller, or set a size you need (for example under 1 MB).
Open toolImages to PDF
Turn photos or scans into a single PDF. Reorder pages and pick the page size.
Open toolFile to PDF
Turn Word, PowerPoint, HTML, text, or an image into a PDF. Nothing is uploaded.
Open toolPDF to Word
Turn a PDF into an editable Word document. Text is copied on your device.
Open toolDelete PDF Pages
Tap pages or type numbers such as 10, 12. Download a PDF with only the pages you keep.
Open toolResize PDF Pages
Make every page A4, Letter, or another size. Content is scaled to fit.
Open toolSign & Watermark PDF
Draw a signature or watermark, then drag it where you want it on the page.
Open toolImage Tools
Compress, crop, convert, and strip location from photos. Your pictures never leave your device.
Image Compressor
Make a photo a size you type, like 20kb. See the size before and after.
Open toolImage Resizer
Change a photo's width and height in pixels or by percentage.
Open toolImage Format Converter
Convert photos between PNG, JPG, and WebP. Nothing is uploaded.
Open toolCrop Image
Cut a photo to the part you need. Square, widescreen, or freehand.
Open toolRemove Photo Location
Strip hidden location and camera data from a photo before you share it. Nothing is uploaded.
Open toolStudent Tools
Quick calculators for school and everyday life: GPA, percentages, age, and unit conversions.
GPA Calculator
Work out your GPA on the 4.0 scale. Add courses, credits, and grades.
Open toolPercentage Calculator
Find a percentage, a test score, or how much something went up or down.
Open toolAge Calculator
See exact age in years, months, days, hours, minutes, and seconds.
Open toolUnit Converter
Convert length, weight, temperature, and file size. Metric and imperial together.
Open toolEveryday Tools
Make a QR code or a strong password in your browser. Nothing is stored.