JPG to PDF & PNG to PDF: The Complete 2026 Free Conversion Guide
The detail that decides whether your image-to-PDF output looks professional or amateur isn't the tool, it's choosing the right source format before you convert. A scanned receipt belongs in JPG; a screenshot of a dashboard belongs in PNG. Get that one choice backwards and the same converter produces either a crisp document or a fuzzy one. This guide covers every format and method, but the format-matching call is the part most people skip and then wonder why the PDF looks off.
Quick verdict: Open our free PDF Toolkit, click "Image to PDF," drag in your files, reorder, set page size and orientation, Convert, download. Files process locally, single or batch. The one decision that matters: JPG source for photos and scans, PNG source for screenshots and anything with sharp text.
Supported Image Formats
| Format | Common source | Browser tool support |
|---|---|---|
| JPG / JPEG | Phone photos, web images | Universal |
| PNG | Screenshots, logos, web graphics | Universal |
| WEBP | Modern web images | Most modern tools |
| HEIC / HEIF | iPhone photos | Modern tools (incl. ours) |
| GIF | Animations (first frame used) | Most tools |
| BMP | Legacy Windows screenshots | Most tools |
| TIFF | Professional scans | Some tools, multi-page support varies |
| SVG | Vector graphics | Often requires rasterization first |
Single Image vs Batch Conversion
Single image to single PDF
Simple case: one image, one PDF. Useful for converting a receipt screenshot to PDF for accounting, or sharing a single graphic that needs to be a document.
Multiple images to single multi-page PDF
Most common case in practice. 10 receipts become a 10-page PDF; 50 scanned book pages become one 50-page document; 20 product photos become a portfolio PDF. Order matters — rearrange by dragging before converting.
Multiple images to multiple separate PDFs
Rare but useful: when each image needs its own PDF for individual distribution (e.g., student certificates, invoices). Most tools call this "batch convert to separate PDFs."
Page Size and Layout Decisions
| Page size | When to use |
|---|---|
| Auto / Fit to image | Default — PDF page matches image aspect ratio |
| A4 (210 x 297mm) | International standard, most printing |
| US Letter (8.5 x 11") | US standard, US printing |
| A5 (148 x 210mm) | Half-size documents |
| Legal (8.5 x 14") | US legal documents |
| Tabloid / A3 | Large-format display |
Image fit modes within page
- Fit (preserve aspect ratio): image scales to fit page with possible blank margins. Safest default.
- Fill: image fills entire page; portions outside the aspect ratio are cropped. Good for full-bleed photo PDFs.
- Stretch: image distorts to fill page exactly. Almost never what you want.
- Original size: image embedded at actual pixel dimensions. Good for archival.
Portrait vs Landscape Orientation
The auto-detect option (most browser tools) reads each image's aspect ratio and picks the orientation that fits best. Useful when mixing portrait and landscape images.
- Auto: per-image orientation based on aspect ratio
- Portrait: all pages tall (default for documents)
- Landscape: all pages wide (good for screenshots, wide diagrams)
- Match first image: uses the first image's orientation for all pages (consistent look)
Method 1: Browser-Based (Most Common)
Using our free PDF Toolkit:
- Open the PDF Toolkit in any modern browser.
- Click "Image to PDF" tab.
- Drag and drop your images (JPG, PNG, WEBP, HEIC).
- Reorder by dragging thumbnails.
- Choose options:
- Page size (Auto, A4, Letter)
- Orientation (Auto, Portrait, Landscape)
- Fit mode (Fit, Fill, Original)
- Margin (None, Small, Medium)
- Click Convert. Processing happens locally.
- Download the PDF.
Method 2: Mobile Devices
iPhone (built-in)
iOS has native image-to-PDF support:
- Open the Photos app, select one or multiple photos
- Tap the Share button
- Scroll down, tap "Print"
- In the Print Preview, pinch-out (zoom) on the preview to convert to PDF
- Tap the Share button on the PDF preview to save or send
Alternatively: Files app → select multiple images → tap "..." → "Create PDF."
Android
Workflow varies by OEM. Common methods:
- Google Drive: upload images, tap "..." on each → "Print" → "Save as PDF"
- Samsung: open image in Gallery → share → "Print" → "Save as PDF"
- Pixel: Files by Google supports "Create PDF" from multiple images
- Universal: install a free app like "Image to PDF Converter" or use our PDF Toolkit in mobile browser
Our browser-based tool on mobile
Works the same on phone browsers as desktop. Touch-drag to reorder, tap to upload from photo library or camera. Useful when native OS workflows don't support the formats you have.
Method 3: Desktop Apps
Mac Preview (free)
- Select all images in Finder
- Open with Preview (right-click → Open With → Preview)
- File → Print (Cmd+P)
- PDF dropdown (bottom-left) → Save as PDF
The simplest method on Mac. Each image becomes one page.
Windows Photos (built-in)
- Select images in File Explorer
- Right-click → "Print"
- Choose "Microsoft Print to PDF" as the printer
- Click "Print"
- Save the PDF
Adobe Acrobat
File → Create → PDF From File (single image) or PDF From Multiple Files (batch). Lots of options for advanced workflows.
Method 4: Command-Line (Automation)
For scripts or batch processing:
ImageMagick
# Convert single image
magick image.jpg output.pdf
# Convert multiple images to single multi-page PDF
magick *.jpg output.pdf
# With specific page size
magick *.jpg -page A4 output.pdf
# With quality control
magick *.jpg -quality 85 output.pdfimg2pdf (faster, lossless)
# Install
pip install img2pdf
# Convert single image (lossless, fast)
img2pdf image.jpg -o output.pdf
# Convert multiple
img2pdf *.jpg -o output.pdfimg2pdf is faster than ImageMagick because it embeds JPEGs as-is rather than re-encoding. Recommended for batch jobs.
Quality and File Size Tradeoffs
By default, image-to-PDF conversion is lossless — the image is embedded into the PDF wrapper without re-encoding. File size of the PDF is roughly the sum of input image sizes plus a small overhead.
If you need a smaller output:
- Use compression — most tools offer JPEG quality (60-95) or compression level options during conversion
- Resize images first — downscaling from 4000px wide to 2000px wide cuts file size 75%
- Convert PNG to JPEG before conversion — PNG (lossless) typically produces 2-3x larger PDFs than JPEG for photographs
- Compress the resulting PDF — see our PDF compression guide
Common Use Cases
Combining receipts for expense reports
Photograph each receipt with your phone → export to PDF Toolkit → reorder chronologically → convert → one PDF with all receipts. Reimbursement-ready in minutes.
Scanning a paper document
iPhone Notes app or Android Drive app to scan each page → export images → convert to PDF. Creates a searchable document if OCR is enabled.
Sharing a portfolio
Curate your best work images → convert to a single PDF with consistent page size → share via email or upload to website. PDFs preserve layout across all devices.
Submitting screenshots for support
Take multiple screenshots showing a bug → convert to PDF → attach to support ticket. Cleaner than 5 separate image attachments.
Converting iPhone HEIC photos for non-Apple recipients
HEIC isn't universally readable on Windows or older Android. Convert HEIC to PDF for guaranteed cross-platform compatibility.
Making the PDF Searchable (OCR)
Standard image-to-PDF conversion produces a PDF where the text in images is not selectable or searchable — it's just embedded image content. To make it searchable, run OCR (Optical Character Recognition) before or after conversion:
- Adobe Acrobat Pro: Tools → Enhance Scanned PDF → OCR
- Free CLI: Tesseract OCR + ocrmypdf wrapper
- Built-in: Mac Preview supports text selection from scanned PDFs (uses Live Text in newer macOS)
- iOS Notes: automatically OCRs scanned content; export to PDF preserves the text layer
OCR adds searchable text behind the visual image, so the PDF looks the same but text can be selected, copied, and searched.
Privacy: Browser vs Server
For sensitive images (medical, financial, legal documents, ID copies), prefer browser-based or offline conversion. Server-side online services upload your images to a third-party server, which becomes a privacy risk.
Common Issues and Fixes
- "HEIC files not recognized" — tool doesn't support HEIC. Convert HEIC to JPEG first (free with most modern converters) or use a HEIC-aware tool like our PDF Toolkit.
- Images rotated incorrectly — EXIF orientation metadata is being ignored. Re-save images with corrected orientation, or use a tool that respects EXIF (most modern browser tools do).
- Output PDF is huge — large source images get embedded as-is. Downsize images before conversion, use JPEG instead of PNG, or compress the PDF after.
- White borders around images — "Fit" mode preserving aspect ratio. Switch to "Fill" mode (with potential cropping) or "Original size."
- Pages aren't in the order I uploaded — tool sorted alphabetically by filename. Use the drag-reorder UI before converting, or rename files with numeric prefixes (01-, 02-, 03-).
- Image quality looks blurry — source image was low resolution, or tool downsampled. Use "Original size" mode and ensure source images are at least 1500px on the long edge.
The image-to-PDF mistake I catch most often in content and marketing teams: building a "portfolio PDF" or a one-pager by exporting JPGs of slides that were full of text. The slide looked fine on screen, but JPEG compression turns the headline type into a smeared mess the moment it's zoomed on a client's laptop. For anything where text is part of the image, export the source as PNG (or, better, export the slide directly to PDF and skip the image step entirely). I keep a simple rule pinned for the team: if you can read words in the image, it's PNG or direct-to-PDF, never JPG. It's a five-second decision that's the difference between a deck that reads as polished and one that quietly signals "made in a hurry."
Frequently Asked Questions
The one call that decides output quality
Image-to-PDF is the simplest PDF workflow and the most-used. Browser-based tools handle it in under a minute, support every modern format including HEIC, and process locally for privacy. The decision that actually determines whether the result looks professional is the source format: JPG for photos and scans, PNG (or direct-to-PDF) for anything with readable text. Reserve desktop apps for daily heavy use or OCR-enabled archival.