Image Converters
12 toolsThirteen tools that move pages between PDF and every common raster format, in both directions. The choice that matters most is not which tool you click but which format you pick, because that decision is what determines whether small text stays legible and whether the file is 200 KB or 20 MB.
Image Converters tools
HEIC to PDF
Convert iPhone HEIC photos to PDF format instantly
WebP to PDF
Convert WebP images to PDF format
AVIF to PDF
Convert AVIF images to PDF format
PNG to PDF
Convert PNG images to PDF format
JPG to PDF
Convert JPG and JPEG images to PDF format
PDF to PNG
Convert PDF pages to PNG images
PDF to JPG
Convert PDF pages to JPG images
PDF to WebP
Convert PDF pages to WebP images
TIFF to PDF
Convert TIFF images to PDF format
PDF to TIFF
Convert PDF pages to TIFF images
BMP to PDF
Convert BMP images to PDF format
PDF to BMP
Convert PDF pages to BMP images
Which image format should you convert a PDF to?
PNG when the page is text, a chart, a screenshot or line art. PNG is lossless, so hard edges stay hard and 8-point type stays readable. JPG when the page is dominated by a photograph and you need the file to be small — JPEG compression is very good at photographs and very bad at text, where it smears grey halos around every letter. WebP when the destination is a web page and you control what browsers will open it; it beats JPG at the same visual quality by a useful margin. TIFF when an archive, print bureau or OCR pipeline has asked for it specifically. BMP essentially never, unless a piece of legacy software has left you no choice.
What DPI should you export at?
DPI is only meaningful relative to what happens next. For anything shown on a screen at roughly page size, 150 DPI is already more pixels than the display has. For print, 300 DPI is the long-standing standard and 400 is the practical ceiling here, because a Letter page at 400 DPI is already 14.7 megapixels and the memory cost climbs with the square of the resolution. Exporting at 600 DPI to be safe mostly produces a file four times larger that looks identical. If small print has to survive OCR, 300 DPI is the number to hit; below 200 the recognition rate falls off sharply.
Why does converting images to PDF sometimes change the quality?
Because two of these converters re-encode and the rest do not. JPG, HEIC and WebP sources are decoded and re-encoded as JPEG inside the PDF, which is a second lossy pass — the quality slider on those pages controls exactly how much. PNG is embedded as-is, so PNG to PDF is genuinely lossless, and AVIF, BMP, TIFF and SVG are decoded and stored as PNG data, so no second lossy pass happens there either. If you are converting a scan of text and the result looks soft, that is the JPEG pass, and switching the source to PNG first will fix it.
Can you combine several images into one PDF?
Yes, and the converters that accept multiple files let you set the order before conversion rather than sorting by filename and hoping. Up to 20 images, 25 MB each and 100 MB in total, become one multi-page document with the page size, orientation and margin you choose. Choosing "original" page size makes each page exactly the pixel dimensions of its image, which is right for screen viewing; choosing A4 or Letter scales each image to fit inside the page with your margin, preserving the aspect ratio, which is right for printing and for anything being filed.
Raster formats compared for PDF work
| Format | Compression | Transparency | Best for | Avoid for |
|---|---|---|---|---|
| PNG | Lossless | Yes | Text, screenshots, charts, line art | Large photographs |
| JPG | Lossy | No | Photographs, scanned colour pages | Text and sharp edges |
| WebP | Both | Yes | Web delivery where size matters | Archives, print handoff |
| AVIF | Both | Yes | Smallest modern web images | Anything needing wide support |
| TIFF | Both | Yes | Archives, print, multi-page scans | Email and web |
| BMP | None | No | Legacy software that accepts nothing else | Everything else |
| HEIC | Lossy | Yes | What an iPhone already gave you | Sharing outside Apple devices |
Transparency survives into a PDF, but print pipelines flatten it unpredictably. Flatten onto white before converting if the file is going to a printer.
Every tool in this category runs on your device
There is no upload step and no processing server. Open your browser’s network panel and run any of them — the only requests are for the page itself.