PDF to QOI converter
A free PDF to QOI converter for Portable Document Format files. Browser-based pairs here usually run in this tab, with no file upload.
Drop your PDF files here
or browse your device · paste with Ctrl+V
Accepts .pdf files. You can queue several files; each is processed one after another on your own device.
Your files never leave this device — there is no upload and no server to delete them from.
- 01
Add your PDF files
Drop them onto the box above or click to browse. They are read straight from disk — nothing is sent anywhere.
- 02
Check the settings
QOI is already selected. Open the gear icon on any row if you want to change quality, dimensions or codec before converting.
- 03
Download your QOI
Press convert and wait for the row to finish. Convert several files and you can take them all as a single ZIP.
The format that guarantees a document looks identical everywhere, because it carries its own fonts, layout and colour with it. An ISO standard since 2008, and the default for anything meant to be printed, signed or filed.
- Developed by
- Adobe
- Released
- 1993
- Extension
- MIME type
- application/pdf
- Compression
- Lossy or lossless
- Specification
- Open
QOI
Quite OK Image FormatA lossless format whose entire specification fits on one page, encoding and decoding many times faster than PNG for a small size penalty. A favourite in game engines and hobby projects.
- Developed by
- Dominic Szablewski
- Released
- 2021
- Extension
- .qoi
- MIME type
- image/qoi
- Compression
- Lossless
- Specification
- Open
- QOI stores the incoming samples as provided, so this step does not add generic quality loss. If the source PDF was already lossy, those earlier losses remain.
- A single-page PDF becomes one QOI file. A multi-page PDF becomes one QOI per page, delivered together as a ZIP.
Questions about converting PDF to QOI
Is this PDF to QOI converter free?
Yes. Converting PDF to QOI here is free, with no account, no watermark and no daily quota. The work runs on your own device, so there is no server cost to pass on to you.
Is my PDF file uploaded anywhere?
For browser-based pairs, your file is read locally and converted by pdf.js in this tab. No file payload is uploaded; you may still see analytics and engine downloads in network logs.
Is there a file-size limit for PDF to QOI?
There is no imposed upload cap when it runs in-browser, but each conversion still depends on your device and browser memory. Large videos are the first practical limit, then memory-heavy documents or images.
Does converting PDF to QOI lose quality?
No. QOI stores its data losslessly, so everything in your PDF file is preserved exactly.
Can I convert several PDF files to QOI at once?
Yes. Drop in several files and each gets its own row; they are processed one after another on your device. You can download them one by one or as one ZIP.
Does PDF to QOI work on a phone, Mac or Chromebook?
Most modern browsers on Windows, macOS, Linux, ChromeOS, Android and iOS work. Very large videos are often more reliable on desktop or a browser with more memory.
Why do some conversions take longer on first run?
The conversion engine has to download first. Small codec bundles are fast, while ffmpeg is commonly 12–30 MB; later conversions of similar type use the cached engine.
I converted a file and the output is blank or unusable. What should I check?
Start over with default settings, then change one option at a time (quality, bitrate, page size, or codec) to isolate what changed behavior. If it keeps failing, retry with a smaller file and confirm the source format matches the pair.
Convert other formats to QOI
16 formats can become QOI here.
Convert PDF to other formats
A PDF file can become any of these.
QOI to PDF
The reverse conversion
PDF to JPG
PDF to PNG
PDF to WEBP
Merge PDF
Combine several PDFs into a single document, in the …
Split PDF
Break one PDF into separate files, page by page or i…
Extract PDF Pages
Pull specific pages out of a PDF into a new document…
Remove PDF Pages
Delete pages from a PDF and keep everything else.…