Which image formats can I drop?

JPG, PNG, WebP, GIF and AVIF. JPG and PNG go straight in; WebP, GIF and AVIF are re-encoded to JPEG via canvas before embedding. One image per page in the output PDF.

Can I pick page size and orientation?

Yes — `Auto` matches each image's native pixel dimensions, `A4` / `Letter` produces printable sheets, and you can pick portrait or landscape.

How are pages ordered?

Pages appear in the order you drop the files. Drop them one at a time to control the sequence exactly, or pre-rename them numerically before dropping in bulk.

Is this PDF toolkit free?

Yes. folio is free to use, no account is required, and there are no paid plans.

Are my PDFs uploaded to a server?

No. folio runs entirely in your browser. Your PDFs are never uploaded, never seen by our infrastructure, and never stored anywhere outside your device. When you close the tab, every file is gone.

Which operations are supported?

Merge PDFs, split a PDF into ranges, compress a PDF, convert PDF pages to JPG or PNG, build a PDF from images, rotate all or selected pages, add a watermark, and extract plain text. All of this happens in your browser.

Is there a file size limit?

Yes. Each file may be up to 100 MB. Browser memory is the real ceiling — very large scanned PDFs may struggle on lower-end devices.

Can I work with multiple PDFs at once?

Yes. Merge and Images→PDF accept up to 20 files in a single batch. Split, Compress, Rotate, Watermark and Extract Text take one PDF at a time.

Will my converted images / PDFs lose quality?

Compress and PDF→JPG/PNG re-render pages at the DPI/quality you pick, so there is a small generational loss like any image re-encode. Merge, Split, Rotate, Watermark and Extract Text do not re-render — they only edit the existing PDF objects, so quality is preserved.

Can folio open password-protected PDFs?

Not yet. If your PDF requires a password to open, please unlock it first in a dedicated app. We deliberately skip password handling to keep folio fully client-side and free of legal grey areas.

Not in this version. Extract Text only works for PDFs that already have selectable text. Scanned image-only PDFs need OCR, which is a separate, much heavier project we may add later.

Why does the first PDF→Image take a moment?

When you first use an operation that renders PDF pages (PDF→JPG, PDF→PNG, or split previews), folio downloads the rendering engine (~1 MB). After that it stays cached and subsequent operations start immediately.

Are ads required to use the tool?

No. Ads are isolated from the converter. The tool works completely even if ads fail to load or are blocked.

JPG / PNG → One PDF

Combine images into a PDF

Got receipts, scans, or screenshots scattered as image files? Drop them below and folio stacks them into a single PDF — entirely in your browser. Pick auto-sized pages or fit everything onto A4 / Letter.

Drop your images here

They'll be stacked into a single PDF in the order you add them

Choose images

JPG

PNG

WebP

GIF

AVIF

Upload a file to start.

Max 20 images, 100 MB each.

Every operation runs entirely in your browser. Your files never leave your device.

About Images to PDF

Which image formats are supported?

JPG and PNG embed directly into pdf-lib. WebP, AVIF and GIF go through a one-pass canvas re-encode to JPEG before embedding — you'll see a tiny file-size cost but no visible quality loss.

What's the difference between page sizes?

`Auto` uses each image's native pixel dimensions as the PDF page size — best for screenshots and mixed-aspect images. `A4` or `Letter` stretches each image to fit a standard sheet (with padding to preserve aspect ratio) — best for printable documents.

What's the order of pages?

Whatever order you drop the files in. Drop two images at once and the browser usually orders them alphabetically — drop them one at a time to choose the exact sequence.

About this operation

JPG / PNG / WebP / GIF / AVIF → PDF

What it does

Drop your images in the order you want them combined and folio builds a single PDF with one image per page. JPG and PNG embed directly into pdf-lib; WebP, AVIF and GIF go through a one-pass canvas re-encode to JPEG before embedding (tiny file-size cost, no visible quality loss). Pick `Auto` page size to match each image's native pixel dimensions or `A4` / `Letter` for printable sheets, and `portrait` / `landscape` orientation.

When to use it

Bundle scanned receipts into one PDF for accounting
Combine screenshots into a single deliverable
Build a quick portfolio PDF from a folder of photos
Prep printable handouts from image exports

Limitations — what it doesn't do

One image per page — no grid layout or multiple images on one page
No multi-page TIFF input — convert to individual images first
Up to 20 images per batch, 100 MB per image
Pages are added in the order you drop the files

Every tool runs entirely in your browser.

Frequently asked questions

Your PDFs never leave your device

folio is a static page. Every operation runs inside your browser via pdf-lib (edit) and pdfjs (render). There is no server-side processing, no upload, no temporary file, no cache. When you close this tab, every file is gone.

No account required.
No server processing. Your PDFs stay on your device.
No caching, no Service Worker, no IndexedDB persistence.
pdfjs-dist (lazy-loaded for rendering) is fetched from your own origin; nothing else is sent.