Use the image-to-PDF tool to put JPG or PNG images into a single PDF, one image per US Letter page. Files are processed in your browser. Arrange them in the displayed list before generating the output, then download and inspect the result. The output contains images, not recognized text, and transparent areas are filled white.
Prepare a useful set of images
Start with readable originals. If a photograph has glare across a date or an edge is outside the frame, conversion cannot recreate that missing detail. Retake the photograph before generating a PDF. Include the complete document boundary, keep the camera reasonably parallel to the page, and confirm the orientation in an image viewer.
Keep the originals in a separate folder. Use descriptive file names such as receipt-front and receipt-back if that helps you recognize the sequence. File-picker order can differ from the order you intended, so rely on the numbered list shown in the tool rather than the order you happened to click files. The Up and Down controls allow you to change the final sequence without renaming your originals.
What the converter actually does
This implementation accepts up to 20 JPG or PNG files with a combined input size of no more than 40 decimal MB. Each decoded image must be no more than 40 megapixels. These are this tool's limits, not PDF format limits. They help bound browser memory use; a lower-capacity device may still struggle with a large selection.
Each image is decoded, scaled down if its long edge exceeds your selected maximum, drawn onto a white canvas, and encoded as a JPEG. The PDF writer then fits it inside a 540 × 720 point area on a 612 × 792 point page. That leaves at least half an inch of margin and preserves the image's aspect ratio. A narrow receipt will therefore have more blank space than a page-shaped image. The tool does not crop automatically.
Choose resolution and quality deliberately
| Setting | What it changes | What to check |
|---|---|---|
| --- | --- | --- |
| 1,200 pixel long edge | Smaller raster dimensions | Small text may soften |
| 2,000 pixel long edge | More detail retained | Output bytes may increase |
| 3,000 pixel long edge | Largest offered image dimensions | Device memory and download size |
| JPEG quality | Encoding trade-off | Fine lines and compression artifacts |
For an illustrative geometry example, a 4,000 × 3,000 pixel input with a 2,000 pixel long-edge limit becomes 2,000 × 1,500 pixels. The scale factor is 2,000 ÷ 4,000 = 0.5. This does not imply that the output will be half the original file size. Encoded bytes depend on the image content and JPEG encoding.
Reducing a quality setting is not a promised percentage reduction in file size. Compare the downloaded output with your original at a readable zoom. If your purpose is submitting a receipt, check the total, date, and item details. If it is an application page, check all instructions and fields. A preview at thumbnail size is not a sufficient readability test.
Download and check the handoff
Generate the PDF after arranging the images. Open the downloaded file in a PDF viewer and count the pages. Check that front and back images are both present where needed. Compare the actual file size with the destination's requirements using the upload-size checker.
This converter does not make an accessible tagged document or run OCR. It does not produce PDF/A or validate filing requirements. If searchable text, reading order, or archival conformance is required, use a workflow designed for that requirement and validate the final file. Keep your original images until the recipient confirms acceptance.
Handle page order and image orientation separately
Reordering images changes the sequence of pages, not the direction each image faces. If a photographed page appears sideways before conversion, rotate it in a suitable image editor and save a copy before selecting it. This implementation does not offer a page-rotation button. Do not assume that moving an item up or down corrects its orientation.
Mixed portrait and landscape images are fitted into the same portrait US Letter page. A landscape image will usually occupy less of the page height. That is intentional fitting, not cropping, but the resulting text can appear smaller when the whole page is shown. Inspect the landscape page at a readable zoom and consider another workflow if the recipient specifically needs landscape page geometry.
The quality setting applies to every selected image in that generation. If one faint page needs more detail than the others, test that page first before converting the full set. Choosing the highest setting is not a substitute for a sharp original, and choosing the lowest setting does not guarantee that you will meet an upload cap.
After using Clear files, the list and generated-download link disappear from the interface. A PDF you already saved is still on your device. Clearing the tool is not a delete command for your download folder, and it is not a secure-erasure guarantee. Manage saved files according to your own document-handling rules, particularly on a shared computer.
FAQ
Can I add existing PDFs to this tool?
No. This tool accepts JPG and PNG images. Existing-PDF merge is unavailable in the current build.
Will transparent PNG areas remain transparent?
No. The converter places the image on white before JPEG encoding. Inspect graphics that depend on transparency.
Is text in the picture searchable?
No. An image-only PDF needs a separate OCR workflow to add recognized text. Recognition results also need checking.
Related guides
See workflow choices, upload-size arithmetic, and compression readability checks.
Sources
- Folio Bench implementation: image scaling, PDF dimensions, and limits described here are verified against this site's own code.
- Adobe scanned PDF settings — OCR and image-compression concepts for workflows beyond this tool.