PNG to PDF Converter

Convert PNG to PDF Online — Free, No Watermark

To convert PNG to PDF, upload one or more PNG images to our servers, pick a paper size (or "Original" to fit the image), and click Convert. Each PNG becomes one page of the PDF in the order you arrange them, then you download the finished file — free, no sign-up, no watermark.

Real result: a transparent PNG logo or screenshot becomes a clean, paginated PDF that opens identically on any device — set Image Transparency to "Removed" to flatten the alpha onto a white background, or leave it "Unchanged" to keep transparency. For mixed image formats, use Images to PDF; to go the other way, see PDF to PNG.

How to Convert PNG to PDF Online

1. Upload Your PNG Files: Drag and drop or click "+ Add Files" to add .png images. Batch upload is supported, and each image becomes a page in the order you upload them — drag the file tiles to reorder before converting.
2. Pick Paper Size and Page Layout: Default is A4. Choose Letter for US printing, Legal/Tabloid/Ledger for wider layouts, ARCH A/B for architecture sheets, ISO B4/B5 for international forms, Executive for business stock, or "Original" to size each page to match the source image. Set Page Layout to Portrait (default) or Landscape.
3. Set Image Placement, Alignment, Margin, Compression, and Transparency (Optional): Choose Contained (whole image visible, may letterbox) or Cover (fills page, may crop). Align Top, Center, or Bottom. Pick Narrow (0.5"), Moderate (0.75x1"), Normal (1"), or Large (2x1") margins — or No margin (0") for edge-to-edge. Drop the Image Quality slider (1–100, default 75) to shrink the output, and switch Image Transparency from Unchanged to Removed if you want a white background baked behind the PNG instead of pass-through alpha.
4. Convert and Download: Decide whether to merge every PNG into one multi-page PDF (Single PDF, default) or output one PDF per file (Individual PDFs), click "Convert," and download. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.

Why Convert PNG to PDF?

PNG is the format Windows, macOS, and Linux use for screenshots, the format design tools export logos and UI mockups in, and the format scanner apps drop on desktop when they want lossless quality. The catch is that PNG is a single-image container — one file equals one picture, with no concept of pages, paper size, or print margins. PDF wraps one or many PNGs into a portable document with real paper sizes, margins, and page order, which is what most upload portals, print shops, and email recipients expect when you're sending receipts, scans, or screenshot bundles. Wrapping PNGs in a PDF also gives you an archival-friendly file that opens identically on every device with no dependency on an image viewer.

• Screenshots and bug reports — macOS Cmd+Shift+4 and Windows Snipping Tool both save PNGs by default. Stitch a sequence of screenshots into one PDF in upload order to document a bug, a checkout flow, or a step-by-step tutorial that's easier to send than seven loose .png files.
• Receipts, invoices, and proof of purchase — PNG receipts saved from Amazon order pages, Stripe dashboards, or banking portals combine into a single PDF for expense reports, warranty claims, or tax records. One PDF beats attaching a dozen loose images to an email.
• Scanned documents and contracts — Phone scanner apps and quick photos of signed forms, leases, or IDs are easy to capture as PNG but awkward to share. Merge them into a multi-page PDF in upload order for digital signing, e-filing, or upload to portals that require PDF.
• Submission portals that require PDF — USCIS, IRS, university applications, insurance claim portals, and HR onboarding systems often refuse .png uploads but accept PDF. Convert in 30 seconds rather than re-scan.
• Logos, diagrams, and design assets — PNG's lossless compression and alpha channel make it the format of choice for logos, icons, and UI mockups. Wrap them in a PDF for client review, brand-guideline handoffs, or printed style guides where the recipient may not have Figma or Photoshop.
• Long-term archival — Fixed-layout PDFs are easier to organize, OCR, and back up than thousands of loose .png files. One PDF per project is faster to retrieve than a folder of orphan screenshots.

PNG vs PDF — Format Comparison

Paper Size and Layout Quick Guide

Frequently Asked Questions

Is PNG transparency preserved in the PDF?

Set Image Transparency to "Unchanged" (the default) and the alpha channel passes through into the PDF — transparent regions stay transparent, which is what you want for logos, icons, and UI mockups going into a brand-guideline PDF. Set it to "Removed" to flatten the alpha against a white background before embedding, which is the safer choice when the PDF will be printed or sent to a viewer that handles PDF transparency poorly. Adobe Reader, modern browsers, and Preview all handle PNG alpha in PDF correctly; older e-readers and some legacy print pipelines do not. In our testing, the same transparent-logo PNG opens with a checkerboard-style transparent region under "Unchanged" and on a solid white page under "Removed" — pick "Removed" whenever you can't predict the recipient's PDF viewer.

Can I combine multiple PNG images into one multi-page PDF?

Yes. Upload as many PNG files as you need and the converter creates a multi-page PDF in upload order — one image per page by default (Single PDF mode). Switch to Individual PDFs if you'd rather output one PDF per PNG instead. Reorder the files in the upload list by dragging tiles before converting to control the page sequence.

How do I keep the screenshot edge-to-edge with no white border?

Set Margin to "No margin (0")" and Image placement to "Cover." For exact 1:1 fidelity — useful when the PNG is already at screenshot dimensions — set Paper size to "Original" so the PDF page matches each image's pixel dimensions, leaving zero padding. This is the right choice for receipts, screenshots, and scans where extra whitespace looks unprofessional.

Will converting to PDF reduce my image quality?

The Image Quality slider defaults to 75, which re-encodes the PNG into a JPEG inside the PDF for a smaller file. Drag it to 100 for archival or print to keep the visual data as close to the lossless PNG source as possible; drop it lower (40–60) when the PDF needs to fit under a 5MB or 10MB upload limit. Each PNG is embedded at its original pixel dimensions, so resolution is preserved regardless of slider position. If the finished PDF is still too large for an upload portal, run it through Compress PDF afterward.

What's the difference between Cover and Contained image placement?

Contained scales the image so the entire image is visible inside the PDF page, padding the unused space with white — useful when you must keep every pixel of a screenshot or scan. Cover scales the image to fill the page completely, cropping whichever dimension is too long — useful when you want a borderless "photo print" look for a portfolio or product PNG. Pair Cover with Top/Center/Bottom alignment to control which part of the image gets cropped.

Can I mix PNG and JPG images in one PDF?

This page accepts PNG only. For mixed-format batches, use Merge Image to PDF, which accepts PNG, JPG, JPEG, TIFF, WebP, HEIC, and more in one upload. If your batch is JPG/JPEG, JPG to PDF is the dedicated converter — same engine, different default extension. Photos shot as JPEG lack an alpha channel, so transparency settings simply don't apply there.

Can I set a specific page size like A3 or ARCH B?

Yes. The Paper size dropdown includes A3, A4, ARCH A (9 × 12 in), ARCH B (12 × 18 in), ISO B4, ISO B5, Executive, Legal, Letter, Ledger, Tabloid, Screen Size, and Original. Pick the size that matches your printer or submission spec — Page Layout (Portrait/Landscape) toggles independently, so a landscape A3 spec sheet from a Figma export lands exactly where you expect.

How does this differ from "Merge PNG to PDF"?

Convert and Merge use the same underlying engine — the difference is the default behavior. This converter defaults to Single PDF mode (one combined multi-page PDF) but lets you flip to Individual PDFs. The dedicated Merge PNG to PDF tool defaults to merge with drag-to-reorder front and center. Pick whichever matches how you think about the job.

Are my files uploaded to your server?

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no permanent storage, no account required, no watermark added, never shared. For batch image work that doesn't involve PDF output, Compress PNG handles the same upload flow without ever changing the format.