Free · Lossless · Transparent
PDF to PNG Online, Free — Actually Lossless
Many "free" PNG converters quietly re-encode as JPG or flatten transparency.
This one keeps the pixels.
Real PNG encoding. Real alpha preservation. Real zero dollars.
No watermark on output, no signup, no daily quota. Lossless every time.
Some free converters save bandwidth by putting a JPG inside a .png container — you think you have a lossless image, but every sharp edge already has a JPG's block artifacts on it.
✔ Bit-preserving PNG encoder
✔ Alpha channel preserved
✔ Up to 600 DPI
A genuinely lossless browser-based PDF to PNG converter. Each PDF page renders through the browser's canvas API at your chosen DPI, then encodes straight to PNG with the built-in toBlob('image/png') — bit-preserving by design. Transparency comes through as a real alpha channel. No JPG re-compression sleight of hand, no watermark, no file count ceiling, no signup. Related: PDF to JPG online free, PDF to PNG without upload, convert PDF online free.
photoLossless PNG encoding
layersAlpha channel preserved
blockNo watermark
person_offNo signup
✔ Check with any image-comparison tool — byte-identical on re-encode
Real lossless. Real alpha. Real free.
What "lossless PNG" actually means — and where other free tools cheat
The word "lossless" is the entire reason to pick PNG. Here's where it goes wrong in cheaper converters — and what we do instead.
The cheap trick: JPG-in-PNG
A common bandwidth-saving hack: render the page, JPG-compress internally, then re-wrap as a PNG file. The result opens as a PNG but the pixels already carry JPG block artifacts around every sharp line. Look closely at tables or thin text — you'll see it. This tool doesn't do that.
The other trick: alpha flattened to white
Some converters throw away the alpha channel and render transparent regions over a default white background. The output technically is a PNG, but you've lost every overlay-friendly property that made you pick PNG in the first place. Our encoder keeps alpha intact when it's in the source.
Free because we don't pay for it
Every "free" tool has to recover its costs somehow — usually via watermarks, account-gated downloads, or ads. This one runs in your browser, so our per-conversion cost is zero, so there's nothing to recover. The economics never forced us to gate it.
Full DPI range — no "Pro only" lock
150, 300, 600 DPI are all available without signing in. Many free tools cap the free tier at 72 or 150 DPI and lock higher resolutions behind a paywall. Here, the resolution picker works the same whether you're signed in or not.
Typical "free" PNG tool vs this live race
Same request — a 12-page PDF to PNG at 300 DPI. Watch how the "free" version cuts corners.
Typical "free" PNG tool
Free tier with lossy shortcuts
- Upload 32 MB PDF to server
- Silently JPG-compress internallyLossy
- Flatten alpha to white backgroundAlpha lost
- Cap DPI at 150 unless you upgradeCapped
- Stamp watermark in cornerWatermark
- Signup wall before downloadSignup
Data uploaded
0 MB
Alpha preserved
No
Actually lossless
No
This tool
Genuinely lossless, in your browser
- Drop PDF — renders locallyLocal
- Canvas → native PNG encoderLossless
- Download — alpha intact, no markFree
check_circle
Done — while the other tool is still trying to flatten your alpha.
Bit-preserving. Transparent. Truly $0.
Data uploaded
0 MB
Alpha preserved
Yes
Actually lossless
Yes
Animation runs once per view — tap replay to watch again.
Three steps — lossless all the way
No account, no email, no "continue" modal. Drop, convert, download.
1
Drop your PDF
Pick a file or drag-drop into the page. The PDF loads into browser memory as an ArrayBuffer — no upload request, no file in transit, no server to wait on.
2
Pick DPI — up to 600
150 DPI for web/screen, 300 DPI for print, 600 DPI for archival scanning. The picker is free across the full range — no "upgrade to Pro for high resolution" prompt. PNG stays lossless at every DPI.
3
Download clean PNGs
One PNG per PDF page, ZIP'd for multi-page documents. Canvas native encoder → bit-preserving PNG → your Downloads folder. Open it in any image tool and re-encode to confirm: byte-identical.
Free comparison — PNG-specific edition
The fine print that matters specifically for PNG: losslessness, alpha channel, DPI ceiling, and whether "free" really means free.
Feature
Typical "free" PNG tool
This tool
Actually lossless PNG
closeOften JPG-in-PNG
checkAlways bit-preserving
Alpha channel preserved
closeFlattened to white
checkPreserved when present
Max DPI
close72–150 (Pro for more)
checkUp to 600 DPI, free
Watermark on output
closeUsually yes
checkNever
Daily file limit
close3–5 per day
checkUnlimited
Signup required
closeOften after first use
checkNever
File uploaded to server
closeYes
checkNo, stays local
Commercial use
closeOften restricted
checkUnrestricted
Related free tools
Frequently asked questions
Is the output a real lossless PNG?
Yes — true PNG encoding with no lossy re-compression step. Many "free" PNG converters quietly re-encode the raster as JPG inside a .png container or put it through a lossy optimizer; this one uses the browser's native canvas PNG encoder, which is bit-preserving by design.
Does it preserve transparency?
Yes, when the source PDF has transparency it's kept as a real alpha channel in the PNG. If the source is opaque (the usual case), you get solid output with no invented alpha. Either way, the PNG matches the page — we don't flatten alpha to a white background behind your back, which is a common trick in cheaper converters.
Is it really free with no signup?
Yes. No email, no account, no "upgrade to Pro" gate. PDF-to-PNG conversion is unlimited and untimed — there's no per-day file count, no size limit hidden behind a paywall. Because the conversion runs in your browser, there's no server-side cost to recover.
Will there be a watermark on the output?
No watermark ever. The output PNG is exactly what the PDF page looks like — no logo, no corner stamp, no "converted with…" text baked into pixels. Many competitor free tools add a small watermark to the lower corner unless you pay; this one doesn't.
What DPI does it output at?
Default is 150 DPI — good for on-screen or light print use. Configurable up to 300 DPI for sharp print output, 600 DPI for archival scanning workflows. The DPI picker is visible in the main tool UI, not hidden behind a "Pro" gate.
Why choose PNG instead of JPG for PDF pages?
PNG is lossless — every pixel is preserved exactly. That matters for documents with sharp text, line art, tables, or screenshots where JPG's block artifacts become visible. For photo-heavy pages without text, JPG often produces a smaller file with no visible difference; we provide both tools so you can pick. Tables + diagrams + text → PNG; natural photos → JPG.
Is the output size bigger than JPG?
Yes, typically 3–5× larger, because PNG stores every pixel losslessly. A 1-page document PDF might be ~300 KB as a PNG vs ~90 KB as a JPG. If file size matters more than perfect fidelity, JPG is the right choice; if you're archiving or designing, PNG keeps everything.
Does it work for scanned PDFs?
Yes. The converter renders each PDF page regardless of whether the content is native text or a scanned raster. For scanned documents, PNG is often a better choice than JPG because it doesn't compound the scanner's original compression artifacts with additional JPG quality loss.
How is this different from a screenshot?
Screenshots capture what's rendered on your screen at the current zoom — usually 100 DPI or whatever your monitor reports. This converter renders each PDF page at the DPI you pick, from the original vector data when available, producing a sharp image that scales beyond screen resolution. No zoom-in blur.
Is there a file count or size limit?
No artificial limit. Practical ceiling is your browser's memory, typically around 500 MB per file on modern laptops. Batch-convert as many files as you want — because the conversion runs on your CPU, we don't ration by count.
Does the file get uploaded anywhere?
No. The PDF bytes never leave your browser. DevTools → Network tab will show no upload request carrying your file. This is why the tool can stay free: there's no server-side bandwidth or CPU bill to pass on to you.
Does it work on my phone?
Yes. Safari on iOS, Chrome/Firefox on Android all support the underlying canvas PNG encoder. Smaller PDFs convert comfortably on a mid-range phone; very large scanned docs may be slow due to mobile memory limits.
What's the catch with other "free" PDF-to-PNG tools?
The usual traps: (1) secret JPG re-encoding inside a .png container, costing you the lossless guarantee; (2) alpha-channel flattened to white without warning; (3) watermark in the corner; (4) 3 files per day limit; (5) signup required after first use; (6) size cap around 10–25 MB. None of these apply here because the tool runs locally and has no server-side meter.
Can I use this for commercial work?
Yes. The output PNGs are yours — no license restriction, no commercial-use clause to read. Freelancers, agencies, and small businesses use this exactly as they would a paid desktop converter.
What libraries power this?
PDF parsing: PDF.js (Mozilla, open source). Rendering: browser's native canvas API. PNG encoding: the browser's built-in toBlob('image/png'), which is bit-preserving. All open source, all runs on your device — you can inspect the client code in DevTools → Sources.
Real lossless. Real alpha. Real free.
No JPG-in-PNG trickery. No flattened transparency. No watermark. Just clean PNGs rendered in your browser, exactly as the source intended.
photoConvert to PNG — Free