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Nifty Tools
PNG to PDF converter that runs in your browser. Embed PNGs losslessly with alpha preserved — no upload, no signup, no watermark.
Processing mode: Local Browser-local
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PDF to PNG Converter Free Online
PDF to PNG converter that runs in your browser. Render every PDF page as a sharp transparent-friendly PNG — no upload, no signup, no watermark.
Images to PDF
Turn ordered JPG, PNG, WebP, and AVIF images into one clean PDF.
Convert PDF to JPG or PNG
Render PDF pages as sharp PNG or JPEG images and download them individually or as a ZIP.
HEIC to PDF Converter — Free, In Your Browser
Convert heic to pdf in your browser. Batch up to 50 iPhone photos at once. No upload, no signup, no watermark.
Merge PDF Files
Combine multiple PDFs into one clean document in the order you choose.
Compress PDF
Two modes. Preserve keeps selectable text, links, and form fields intact. Aggressive rasterises pages for maximum size reduction on scans.
Convert Image Files
Convert images to WebP, JPEG, or PNG for websites, uploads, and sharing.
AVIF Converter — Free, In Your Browser
AVIF converter that runs in your browser. Convert avif to jpg or png in batches of 50. No upload, no signup, no watermark.
How to use it
Good for
People convert PNG to PDF when the next step in their workflow needs a single document instead of a folder of loose images, and they care about not introducing JPEG artefacts on the way. Designers exporting comps from Figma, Sketch, or Photoshop usually deliver client review as a PDF — but every "free PNG to PDF" converter on the open web takes the lazy path of routing each PNG through a JPEG canvas before embedding, which adds visible block-noise to flat design surfaces (UI mockups, infographics, charts, screenshots) and quietly destroys transparency on logo and overlay layers. This tool uses pdf-lib's `embedPng`, which decodes each PNG and stores the pixels (and the alpha channel) as a lossless Flate-compressed PDF image — no JPEG re-encode, no canvas roundtrip, no quality loss. The pixel values you see in the source PNG are the pixel values that get rasterised when the PDF is opened, which matters for design hand-offs, regulated industries that need to prove no lossy step happened, and any case where flat colour fields, anti-aliased text, or transparent overlays must survive the trip into PDF without smearing. The conversion happens entirely in your browser — PNGs and the finished PDF stay on your device, which keeps unannounced product screenshots, client-confidential mockups, or pre-launch marketing artwork off third-party servers that log, cache, or feed AI training pipelines.
Processing mode
Files are processed by your browser. They never reach our servers.
Questions
Yes. The tool uses pdf-lib's native `embedPng` API, which decodes the PNG and stores the pixels and the alpha channel inside the PDF as a Flate-compressed image XObject — the alpha channel survives as a soft mask. Most online PNG-to-PDF converters take a shortcut: they decode the PNG into an HTML canvas, then re-encode the canvas as JPEG before embedding (because pdf-lib's `embedJpg` is simpler to wire up than `embedPng`). That shortcut flattens any transparent regions to white and re-introduces JPEG compression artefacts. This converter skips the canvas roundtrip entirely, so a transparent logo PNG keeps its transparent edges in the PDF and can be extracted with alpha intact (for example via `pdfimages -png`).
No. PNG embedding in pdf-lib is lossless at the pixel level — the source PNG is decoded once, then the raw pixels and the alpha channel are re-stored inside the PDF as a Flate-compressed image XObject. Flate (zlib) compression is lossless, so the pixel values are preserved exactly; the embedded image renders pixel-identical to the source PNG and extracts back with the same pixel values (note: the extracted PNG is a re-serialised PNG file, not a byte-copy of the original PNG container — but the pixel data inside is identical). This is different from the more common image-to-PDF path where each image is re-encoded as JPEG at quality 0.92 — that path adds one lossy step and visibly degrades flat colour fields, anti-aliased text, and transparency boundaries. If you need pixel-perfect preservation (regulated workflows, design hand-offs, archival capture), the lossless path is the only safe choice.
Yes. After dropping PNGs into the workspace, the queue panel shows each one as a thumbnail row. You can drag rows to reorder them, or use the Up/Down buttons on each row for keyboard-friendly reordering. The final PDF page order matches the queue order at the moment you click Create PDF — there's no separate "save" step. Each PNG becomes its own page sized to the source image's pixel dimensions, which means no cropping, no scaling, and no whitespace padding around oddly-shaped exports.
Each PNG must be under 100 MB and a single batch can hold up to 50 PNGs. Those caps protect lower-RAM devices from running out of memory during PDF assembly, since pdf-lib materialises the PDF document in memory before writing it. For most realistic workloads — UI mockups, screenshot collections, design exports, photo portfolios — these limits are generous: a 4K PNG screenshot is typically 2–5 MB, so 50 of them fits comfortably under most browser tab memory budgets. If you need to merge a larger batch, split the work into multiple PDFs and combine them with our Join PDF Files tool.
No. The PDF is built in your browser using pdf-lib loaded from this domain — there is no upload step, no server-side processing, and no third-party API. The original PNGs and the finished PDF stay on your device. That makes the tool safe for unannounced product screenshots, client-confidential mockups, pre-launch marketing artwork, and any other PNG content that you can't risk on a third-party converter that might log, cache, or feed AI training pipelines. You can verify the no-upload claim by opening DevTools → Network and watching for outbound requests during the conversion — there are none.
The basic workflow is designed to stay free. Paid upgrades later will focus on bigger limits, batch work, OCR, saved presets, and ad-free use.