Images to PDF

Use the format-specific tools (JPG to PDF, PNG to PDF, WebP to PDF) when you have a uniform batch — they have slightly faster paths and simpler UIs. Use Images to PDF when your source files mix formats and you want one output in one operation. The mixed-format tool detects each input's format and routes it through the optimal embed path, so you do not lose the JPG fast-path or the PNG lossless preservation just because the batch contains both. The only thing you give up by using Images to PDF is a few extra UI options that are too specialized for the mixed case (like per-format quality sliders). For 90% of mixed-content jobs, Images to PDF is the right pick.

Yes. With Auto-fit page size, each PDF page matches the aspect ratio of its source image, so portrait photos produce portrait pages and landscape ones produce landscape pages, side by side in the same document. With a fixed page size (A4 or US Letter), all pages have the same dimensions and orientation, and images are scaled to fit with margins. Auto-fit gives a tighter, more visually consistent result when content varies; fixed size gives uniformity for printing. For a portfolio mixing tall and wide shots, Auto-fit usually looks best. For a printed handout, fixed size aligns better with binders and folders. You can preview both before saving by toggling the page-size setting.

Yes. The order you see in the file cards is the order of pages in the output PDF, top to bottom. Drag any card up or down to rearrange. By default the tool orders by filename (alphabetical), which works well for files named with a numeric prefix (01-photo.jpg, 02-photo.jpg, etc.) but fails for natural ordering like (image-2 before image-10 alphabetically). For natural sort, rename your files with zero-padded prefixes before uploading, or drag manually. The order is locked only when you click Convert; until then, freely rearrange. There is no save-and-reorder loop needed — get the order right first, then convert once.

The tool skips the broken file and continues with the rest, showing an error message identifying which image failed and why (unsupported format, corrupted bytes, decoder error). The output PDF contains all successfully processed images in order. Common failure modes: a .jpg file that is actually a different format (rename to test), a WebP file with non-standard color profile, or a PNG with an unusual bit depth. Convert the problem file with the format-specific tool to see the detailed error, or open it in a standard image viewer to confirm it is valid. If you need a complete batch with no skips, fix or replace the broken file before clicking Convert again.

No, not by default. Images to PDF produces an image-based PDF with no text layer — what you see is photos and graphics, not text. To make the PDF searchable, run it through OCR PDF after conversion. The OCR tool uses Tesseract.js entirely in your browser to recognize text in each image-page and adds an invisible text layer that matches the visible content, making the PDF copy-paste-able and Ctrl-F-able. OCR works best on document photos (receipts, scanned pages, screenshots of text) and adds 5-30 seconds per page depending on complexity. For pure photos with no text, skip OCR — it would produce noise rather than useful searchable content.

No hard cap; browser memory is the practical ceiling. On a typical laptop, batches of 100-200 mixed-format images at typical phone-photo sizes work fine. On phones, keep batches under 50 images for reliable conversion. The bottleneck is usually decoded pixel data held in memory during conversion — a single 50-megapixel image uses around 200 MB of raw RAM, so a handful of huge images can exceed mobile limits faster than dozens of normal ones. If you hit memory issues, split into smaller batches and merge the resulting PDFs with Merge PDF. The conversion itself never touches the network, so a slow internet connection has no effect on speed.