How to convert JPG to PDF — free, no watermark, no upload
- Drop your images into the zone above, or click to browse. JPG, PNG, and WebP are all accepted — select as many as you need at once.
- Drag rows to set the order they will appear in the PDF — the top image becomes page 1.
- Choose a page size: A4 or Letter centre each image on a standard page with a small margin. Original sizes each page exactly to the image dimensions.
- Click Create PDF. The file downloads instantly to your device.
Everything runs in your browser using pdf-lib.
No image is uploaded, no account is required, and the output PDF has no watermark. Open DevTools (F12) → Network while converting to confirm zero upload requests.
Convert multiple JPG to PDF in one go
The tool is designed for batch conversion — there is no one-image limit. Drop ten, twenty, or fifty images at once and they all land in the file list. Drag to reorder, remove any you do not need, then click Create PDF to produce a single multi-page document with one image per page.
This is the differentiating feature versus simpler converters that only accept a single file at a time. Common use cases: combining a set of scanned pages back into a document, packaging a sequence of screenshots into a report, bundling a photo series into a single shareable file.
The images appear in the PDF in exactly the order shown in the list. Reordering is done by dragging rows — no need to rename files before importing. There is no signup, no file size cap, and no watermark on the output.
When to convert images to PDF
- Submitting scanned documents — many portals, banks, and government services require PDF uploads. Scanning produces JPG or PNG files; this tool bundles them into the format you actually need.
- Sending a photo portfolio — a single PDF is easier to email, easier to print, and more professional than a folder of image files.
- Combining whiteboard photos from a meeting — stack multiple photos into a single document that can be shared, archived, and annotated.
- Packaging screenshots as a report — attach a sequence of screenshots as a single PDF rather than a chain of inline images in an email.
- Converting iPhone screenshots to PDF — iOS exports screenshots as PNG; PDF is a more universally compatible format for formal correspondence and submission portals.
- Creating a simple photo book draft — rough out page order and sequence before handing off to a print design tool.
How it works under the hood
pdf-lib is a JavaScript library that constructs PDF documents from scratch in the browser. For each image you add, it embeds the image data directly into the PDF's internal object structure — JPG bytes stay as JPG (no re-encoding), and PNG bytes stay as PNG. This means the embedded images are exactly as sharp as the originals and the output file size is roughly the sum of the input images.
WebP images are not natively supported by the PDF format, so the tool first draws the WebP to an
off-screen HTML <canvas> and exports a lossless PNG, which pdf-lib then embeds.
The visual result is identical to the source.
When you choose A4 or Letter, the tool auto-detects whether your image is portrait or landscape and rotates the page to match, then scales the image to fill the page with a small margin. When you choose Original, each page is sized exactly to the image's pixel dimensions in points.
JPG to PDF free, no sign up
Most JPG to PDF converters online are free for occasional use but impose friction: a daily task limit (Smallpdf: 2 free conversions per day), a watermark on the output, or a required account before you can download. keptlocal has none of these — the conversion runs entirely in the browser with no account, no watermark, no daily cap, and no upload of any kind.
The "free with limits" model exists because server-based tools have real infrastructure costs for every file they process. keptlocal has no server involved, so there is no cost to pass on and no reason to restrict use. Your images go directly from your device into a PDF on your device.
Limits and what to expect
- HEIC (iPhone photos): HEIC is not supported directly. Use our Convert Image tool to convert HEIC to JPG first, then come back here.
- File size: JPG and PNG bytes are embedded as-is, so the output PDF will be roughly the sum of the input image sizes plus a small PDF overhead. Ten 2 MB JPGs produce roughly a 20 MB PDF. Use the Compress Image tool first if you need a smaller output.
- Very large images: images above 20 MP may be slow to embed. Performance is bounded by your device's available RAM.
- Colour profiles: embedded ICC colour profiles in PNG files are preserved. JPG colour profiles pass through without modification.
- Browser support: Chrome 90+, Firefox 90+, Safari 15+, Edge 90+.
Privacy: what happens to your images
Your images are read into browser memory using the File API and processed entirely in
JavaScript. They are never sent to a server, never stored in any cloud, and never visible to anyone
but you. The converted PDF is assembled in memory and downloaded directly to your device.
This matters for sensitive images — ID documents, medical scans, financial statements, personal photographs. With upload-based converters you are trusting the provider's infrastructure and retention policy. With keptlocal the question does not arise: the data never leaves your machine.