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PNG2PDF

Free PNG merge tool

Merge PNG to PDF, all pages in one file

Drop up to 50 PNG files, put them in the order you want, and download a single PDF with one image per page. The merge runs entirely inside this browser tab — nothing is uploaded, there is no file-size cap, and no account or watermark gets in the way.

Need to merge photographs instead? JPG to PDF starts on A4 with compact quality — the setup photos want.

  • 100% free
  • No signup
  • No upload
  • Up to 50 files
  • No size limit
PDF settings
.pdf

Nothing is uploaded — conversion runs in this tab

Preselected for PNG merging: fit-to-image pages, no margin, lossless quality. Change any of it in the controls above.

How to merge PNG files into one PDF

Four steps, no server involved. Your files stay in this tab from start to finish.

  1. Add every PNG you want in the PDF

    Drag your PNG files onto the drop area above, or click it to pick them from a folder. You can add up to 50 images per PDF, 50 MB each. PNG, JPG, WebP, HEIC, AVIF, GIF and BMP are all accepted, so you can mix formats in a single merge.

  2. Arrange the page order

    Each thumbnail becomes one page. Drag or use the arrow buttons to move a page, or hit Sort A→Z to line up filenames like scan_01, scan_02 the way a human reads them. The rotate button fixes any shot tagged with the wrong orientation.

  3. Choose page size and quality

    Fit to image keeps each page exactly as large as its PNG — ideal for screenshots and diagrams. Switch to A4 or Letter if the merged PDF needs to print. Lossless quality is preselected so every pixel comes through unchanged.

  4. Merge and download

    Press Convert to PDF. The merged document is assembled right here in your browser — no server involved. The download button shows the page count and final file size. One click, one PDF, done.

Technical specifications

Input formatsPNG (primary), plus JPG/JPEG, WebP, HEIC/HEIF, AVIF, GIF and BMP
Output formatPDF 1.7 — one image per page, no password, no watermark
Batch limit50 images per PDF, 50 MB per image
Maximum resolution16 megapixels per image; larger files are scaled down to the browser's canvas limit
Default page setupFit to image at 96 DPI (1 px = 0.75 pt), no margin
Other page sizesA4 (210 × 297 mm) or US Letter (8.5 × 11 in) with adjustable margins
Default qualityLossless — full pixel data via /FlateDecode, bit-for-bit identical to source
Compact modeRe-encodes each page as JPEG at quality 85 (/DCTDecode) — smaller files, suitable for photographs
Page reorderingDrag, arrow buttons, or Sort A→Z with natural-number ordering
Processing locationYour browser tab — Canvas 2D and Compression Streams, no server involved
PriceFree, no signup, no watermark, no daily quota
Offline useWorks with the network disconnected once the page has loaded
Browser supportChrome/Edge 80+, Firefox 113+, Safari 16.4+

Frequently asked questions

How do I merge multiple PNGs into one PDF?

Drop all your PNG files onto the box at the top of this page, arrange the thumbnails in the order you want, and press Convert to PDF. Each PNG becomes one page in the merged document. The PDF is built by JavaScript in your browser, so nothing is uploaded and no account is needed.

Is there a file-size limit?

Each individual image can be up to 50 MB, and you can add up to 50 images per PDF. Because the merge happens locally in your browser rather than on a server, there is no total-size upload cap — the only ceiling is your device's available memory.

Can I combine PNGs and JPGs in the same PDF?

Yes. The merge tool accepts PNG, JPG/JPEG, WebP, HEIC/HEIF, AVIF, GIF and BMP in any combination. Add whichever files you have and they all land in the same output PDF, one image per page.

Does merging reduce the quality of my PNGs?

Not in Lossless mode, which is what this page preselects. Each PNG is embedded with its full pixel data via /FlateDecode, so the output is bit-for-bit identical to the original. Switch to Compact only if you need a smaller file and can accept JPEG re-encoding.

Can I reorder pages before merging?

Yes. The thumbnails are the page order: drag them or use the arrow buttons to rearrange. Sort A→Z puts filenames in natural order, which is useful for numbered scans. The order you see is the order you get in the final PDF.

Are my files uploaded to a server?

No. Every PNG is decoded by your browser, drawn to a canvas and written into the PDF locally. You can verify this by opening your browser's network panel while merging, or by disconnecting from the internet after the page loads — the tool keeps working.

How is this different from a PDF merge tool?

A PDF merge tool combines existing PDF documents page by page. This tool merges images — PNG, JPG and others — into a new PDF, one image per page. If you already have PDFs and want to join them, you need a PDF merger; if you have pictures and want one PDF, this is the right tool.

Can I merge PNGs to PDF on my phone?

Yes. Open this page in your mobile browser, tap the drop area and select photos from your gallery or files app. On iPhone, Safari handles PNG and HEIC; on Android, Chrome does the same. The merge runs on the device, so it works the same way as on a desktop.

What if I want each PNG as a separate PDF instead?

Untick the "Combine into one PDF" checkbox before converting. Each image then produces its own PDF, and you download them together as a .zip file.

Why a merge-focused page

This is the same converter as the PNG to PDF homepage, positioned for the merge workflow: you have a stack of PNGs — scanned receipts, design exports, whiteboard shots, slide screenshots — and you want them in one document you can email, archive or submit.

Because the PDF is built by JavaScript inside your tab, there is no upload step and therefore no server-imposed file-size ceiling. The practical limit is your device's available memory, which on a modern laptop or phone comfortably handles dozens of high-resolution PNGs. That makes this tool a direct alternative to hosted merge services that cap you at 25 MB or require an account after the first batch.

The defaults are set for PNG: lossless quality preserves every pixel, and fit-to-image pages avoid white borders around screenshots. If you switch to A4 or Letter each image is scaled to fit and centred, which is the right choice when the merged PDF is headed for a printer.

Your files stay on your device

There is no upload step to opt out of. Your PNGs are decoded, merged into a PDF and handed back as a download — all inside this browser tab. Nothing is transmitted, stored or seen by anyone else. Close the tab and the in-memory copies are gone.