Image to PDF
PNG/JPEG: 30 images, 20 MiB each, 100 megapixels decoded; A4/Letter/image pages and 0, 10, 20, 30 mm.
Preserve avoids JPEG quality recompression; JPEG may be embedded or normalized and PNG re-encoded. JPEG 60–95 is lossy and flattens transparency onto white.
Filenames, EXIF, ICC, and ancillary metadata may be omitted; output can be larger.
How to use this tool
Reorder, rotate, and lay out up to 30 PNG/JPEG images into a PDF locally in your browser.
Combine multiple photos, scanned receipts, IDs, or lecture notes into a single, cohesive PDF document. Reorder pages intuitively, choose margins, and export standard A4 pages.
💡 3 Quick Steps to Get Started
Drag and drop your JPG, PNG, or WebP pictures into the upload panel.
Rearrange page sequences by dragging thumbnails and configure paper margins.
Click Generate PDF to immediately download your clean multi-page document.
When it helps
PNG/JPEG: 30 images, 20 MiB each, 100 megapixels decoded; A4/Letter/image pages and 0, 10, 20, 30 mm.
How it works
Preserve avoids JPEG quality recompression; JPEG may be embedded or normalized and PNG re-encoded. JPEG 60–95 is lossy and flattens transparency onto white. No upload occurs; images and the PDF remain in current-browser memory. Filenames and EXIF, ICC, or ancillary metadata may be omitted from output. Preview and download object URLs are revoked on removal, reset, result replacement, or component unmount. GA4 excludes names, dimensions, quality, contents, and output.
Worked example
Example: order three scans, rotate the second, choose A4 automatic orientation and a 10 mm margin, then download a three-page PDF.
Limits and data handling
Optional JPEG quality 60–95 is lossy, flattens transparency onto white, may change color, and can make output larger. Progress reports processed images over total images. Cancel stops before the next image and discards the incomplete PDF, but cannot undo decoding or canvas work already completed.
No upload occurs; images and the PDF remain in current-browser memory. Filenames and EXIF, ICC, or ancillary metadata may be omitted from output. Preview and download object URLs are revoked on removal, reset, result replacement, or component unmount. GA4 excludes names, dimensions, quality, contents, and output.
Multi-Image to PDF Packaging, DPI Calibration & Margin Guide
1. Geometric Page Fitting: Contain vs. Direct Scaling
Packaging image assets into PDF containers requires precise viewport projection. Standard "Contain" modes scale bitmaps proportionally into standard paper targets (A4, US Letter) with uniform margins, while "Canvas Adaptive" modes calibrate PDF page bounding boxes directly to native image dimensions.
2. Print DPI vs. Raster Coordinate Calibration
Calibrating print density ensures crisp output: Standard A4 at 300 DPI requires 2480×3508 pixels, whereas web preview resolutions target 72-150 DPI.
3. Zero-Upload Client-Side PDF Compilation
Sensitive personal identification cards, receipts, and passports are compiled directly within local browser memory via JavaScript PDF generation engines, ensuring total data privacy.
Feedback
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FAQ
Image to PDF: Which images and limits are supported?
Choose up to 30 PNG or JPEG images, each no larger than 20 MiB and no more than 100 megapixels after decoding across the batch. Extension, MIME type, PNG/JPEG signature, and actual decoding must pass. One invalid file rejects the batch rather than being silently skipped.
Image to PDF: How are images and pages processed?
Each displayed image becomes one page in order. Reorder it, rotate by 0/90/180/270 degrees, choose A4, Letter, or fit-to-image pages, portrait, landscape, or automatic orientation, and 0, 10, 20, or 30 mm margins. Scaling preserves aspect ratio without cropping. Preserve mode applies no JPEG quality recompression: JPEG may be embedded directly or normalized, while PNG is re-encoded into PDF image streams.
Image to PDF: What are the lossy, progress, and cancel limitations?
Optional JPEG quality 60–95 is lossy, flattens transparency onto white, may change color, and can make output larger. Progress reports processed images over total images. Cancel stops before the next image and discards the incomplete PDF, but cannot undo decoding or canvas work already completed.
Image to PDF: Are images uploaded or metadata retained?
No upload occurs; images and the PDF remain in current-browser memory. Filenames and EXIF, ICC, or ancillary metadata may be omitted from output. Preview and download object URLs are revoked on removal, reset, result replacement, or component unmount. GA4 excludes names, dimensions, quality, contents, and output.
