Photos, screenshots, scans — one PDF, built entirely in your browser
Quick answer: to convert JPG to PDF, add your images above, pick a page size (or Fit to image), and press Create PDF. Each image becomes one page in the order shown, JPEGs are embedded without recompression, and A4 output puts a 3024×4032 phone photo at 595.3 × 793.7 points — border-to-border quality, no upload, no watermark.
| Page | Points | Inches | Pixels @ 150 DPI | Pixels @ 300 DPI |
|---|---|---|---|---|
| A4 | 595.28 × 841.89 | 8.27 × 11.69 | 1240 × 1754 | 2480 × 3508 |
| US Letter | 612 × 792 | 8.5 × 11 | 1275 × 1650 | 2550 × 3300 |
| US Legal | 612 × 1008 | 8.5 × 14 | 1275 × 2100 | 2550 × 4200 |
| A5 | 419.53 × 595.28 | 5.83 × 8.27 | 874 × 1240 | 1748 × 2480 |
| A3 | 841.89 × 1190.55 | 11.69 × 16.54 | 1754 × 2480 | 3508 × 4961 |
A PDF point is 1/72 inch. A photo printed edge-to-edge on A4 at 300 DPI wants about 2480 × 3508 pixels — modern phone cameras clear that easily, so Fit to image usually looks as sharp in print as fixed-page output.
PDF was designed to carry images, and this tool leans on that: for JPEG files it takes the compressed bytes your camera wrote and embeds them directly in the PDF, untouched. No decode, no re-encode, no generation loss — the pixels in the PDF are the pixels in the JPG. PNGs get the same lossless treatment via a separate embed path.
WebP, GIF, and BMP have no native slot in PDF, so those are decoded in the page, drawn to an off-screen canvas, and re-encoded once to JPEG at 92 percent quality before embedding — one conversion, visually indistinguishable for photos. HEIC works where the browser can decode it (Safari); elsewhere the row reports the failure instead of silently dropping it.
Fit to image sizes each page to the image's own dimensions converted from pixels to points, so pages have no white borders and mixed portrait/landscape batches just work. Fixed sizes center the image inside the printable area after margins: a 3024×4032 photo on A4 with no margin scales by 595.28 ÷ 3024 = 0.1969 and lands at 595.3 × 793.7 points, filling the width with 24 points of headroom top and bottom. Add half-inch margins (36 points a side) and the same photo draws at 523.3 × 697.7 points.
Add images — a handful or a hundred; each gets a thumbnail row with reorder and remove controls. Choose the page size and margin, name the file, and create. The summary shows page count and the PDF's size next to the total image bytes, which is how you can confirm nothing got re-compressed.
Three receipts photographed on a phone: 3024×4032, 3024×4032, and 4032×3024 pixels, together 6.8 MB of JPEGs. Pick A4, no margin. Pages one and two are portrait and the tool centers each photo at 595.3 × 793.7 points; page three is landscape, so Auto orientation flips the page to landscape A4 (841.89 × 595.28) and the photo draws at 793.7 × 595.3 points — height-bound, since 595.28 ÷ 3024 = 0.1969 is the tighter fit. The finished PDF comes in at roughly 6.8 MB plus a few KB of structure: three pages, three untouched JPEG streams.
Add your images above (JPG, PNG, WebP, and most other formats work), pick a page size — Fit to image keeps each page exactly the photo's proportions, A4 or Letter gives printable pages — and press Create PDF. The download is a real PDF built in your browser. No account, no watermark, and your photos never leave the device, which is the main reason to prefer this over upload-based converters for private documents.
No. JPEG files are embedded as-is: the converter places the original compressed bytes into the PDF untouched, so resolution and quality are exactly what your camera or scanner produced. PNG files are likewise embedded losslessly. Only WebP, GIF, BMP, and similar formats get re-encoded once to JPEG at 92 percent quality, because the PDF format has no native slot for them.
A4 for anything that will be printed or filed in most of the world (595.28 by 841.89 points, 210 by 297 mm), US Letter for North America (612 by 792 points). Fit to image works best when you just want the photos bound together with no white borders — every page matches its image's aspect ratio.
Add them all at once or a few at a time — each image becomes one page, in the order shown. Use the up and down buttons to reorder and the remove button to drop one before creating the PDF. A 3024 by 4032 phone photo fills an A4 page to 595.3 by 793.7 points when margins are off, so page counts and sizes stay predictable.
Yes. The converter is a web page, not an app — it runs in mobile Safari and Chrome, reads images from your camera roll, and downloads the finished PDF straight to the device. That covers the two most common phone workflows: photographing a paper document and sending it as a single PDF, and converting screenshots into one file.
Roughly the sum of the image sizes plus a small overhead per page — typically a few kilobytes total — because JPEG bytes pass through unchanged rather than being re-encoded. A 3 MB batch of photos becomes about a 3 MB PDF. If you need it smaller afterwards, run the result through a PDF compressor; ours rerenders pages and can cut scan-heavy files substantially.