A stack of scanned forms, a photographed notebook or a folder of screenshots: when you have dozens of images, the job is really about organisation. The conversion itself is quick.

The limits per run

• JPG to PDF takes up to 10 images at a time.
• PNG to PDF takes up to 20 images at a time.

For bigger sets, convert in groups and combine the resulting PDFs with Merge PDF. The merge tool accepts up to 10 files per run, so very large projects can be merged in stages.

A workflow that scales

1. Name your images with leading zeros so they sort correctly: 001, 002, 003 and so on. Without zeros, 10 sorts before 2.
2. Sort by type. Put JPGs together and PNGs together, since each converter handles its own format.
3. Split into groups of 10 (JPG) or 20 (PNG), keeping the order.
4. Convert each group and download the PDFs. Name them part-1, part-2 and so on.
5. Merge the parts in order.
6. Check the result by scrolling through the whole document once.

Page size and file size

Each image becomes a page the size of the picture. A large phone photo therefore creates a large page, and the PDF can be much heavier than the original images. Two follow-ups solve this:

• Give every page a standard size with Resize PDF, such as A4 or Letter.
• Shrink the finished file with Compress PDF. See how to compress for email for size targets.

Fixing problems after conversion

• A page is in the wrong place: use Reorder Pages.
• A page is sideways: rotate with Rotate PDF; note this turns every page, so use the single-page method in our rotation guide if only one is wrong.
• You want searchable text: run OCR PDF.
• You want numbered pages: use Add Page Numbers.

Good habits for big scanning jobs

Scan at 150 to 200 DPI for ordinary documents, keep the lighting even and file names consistent, and finish one batch completely before starting the next. Keep the original images until you have checked the final PDF.

Example: 45 scanned pages

Name the files 001 to 045. Convert pages 001 to 010 with JPG to PDF, then 011 to 020, and so on, ending with a fifth PDF of five pages. Merge the five parts in order, resize to A4, compress, and add page numbers. Scroll through the final document before you delete the original images.

Frequently Asked Questions

Can I convert 100 images at once?

Not in one run. Convert in groups and merge the PDFs.

Will the images stay in order?

They follow the order shown when you upload. Name files numerically to be safe.

Can I mix JPG and PNG?

Convert each format with its own tool and merge the results.

Why is my PDF so large?

Each page matches the image size. Resize and compress the finished file.