Image to PDF converter merges one or more images (up to 100 files, 30 MB each) into a single PDF file entirely in the browser. It accepts JPG, PNG, WebP, AVIF, HEIC, SVG, and other common formats, and gives you control over page size, image scale, and margins before generating the file.
Page size options
Standard paper presets
- Auto: each page matches the corresponding image — most common choice
- A4 portrait: 210 × 297 mm (international printing standard)
- A4 landscape: 297 × 210 mm
- Letter portrait: 216 × 279 mm (US standard)
- Legal and A3 also available
Custom size
- Width: 10–2000 mm
- Height: 10–2000 mm
- Useful for invoice templates, presentation covers, or non-standard form sizes
- Unit is always millimeters
Image scale and margins
The scale factor (0.1–8) adjusts how the image is sized relative to the page before fitting. A value of 1 renders at native pixel size then scales to fill the page. Values above 1 enlarge the placed image (useful for small images on larger paper); values below 1 shrink it.
Margins are set in millimeters (0–1000). Enable "Link all margins" to apply one value to all four sides. Disable it to set top, right, bottom, and left independently — this is useful for double-sided printing with a wider binding margin on one side.
Image order and output file name
Pages appear in the same order as the uploaded images. The output PDF is named after the first image file with a converted suffix. Reordering before converting requires re-uploading in the desired sequence.
When Auto page size makes sense vs. a fixed preset
Use Auto when images have mixed orientations or varying dimensions — each page will fit its image exactly with no blank margins. Use A4 or Letter when the PDF is destined for printing or formal submission, or when you need a consistent page size across images of different sizes.