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PDF/JPG to PDF

JPG to PDF

Turn JPG (and PNG, WebP, HEIC-style) photos into a single PDF — reorder pages, pick A4/Letter or fit-to-image, 100% in your browser.

100% LOCALReorder pagesA4 / US LetterMargins + qualityBatch combine
Saved Presets· Auto-save on
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The CalculatorPage 1
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Drop your JPGs here, or click to browse
Add more at any time — pages keep the order shown below

Add your JPGs, set the page size, and build one PDF

Data Source & Legal Disclaimer
Effective: 2026Last updated: 2026-09-08Update: Manual review
Sources: PDF 1.7 specification (ISO 32000-1)

Conversion runs entirely in your browser with pdf-lib. Your images are never uploaded. Page sizes use the PDF point system (1 pt = 1/72 inch): A4 is 595.28 × 841.89 pt, US Letter is 612 × 792 pt.

See all data sources & update policy →
How it worksPage 2

Combining photos into one PDF — the details that decide whether it prints right

“JPG to PDF” sounds trivial until the output lands on a printer. The three decisions that actually matter are page size, page order, and how transparency is handled. Page size: if you let each page match its image, a 4000×3000 photo becomes a 55-inch-wide PDF page that most print shops silently rescale, cropping your margins. Picking A4 (595.28 × 841.89 pt) or US Letter (612 × 792 pt) up front means the image is scaled to fit inside a real page — what you see on screen is what prints. Page order: file-system order is alphabetical, not the order you shot or scanned, so a reorder step before converting saves a re-do. Transparency: JPEG has no alpha channel, so a transparent PNG flattened onto nothing turns into black boxes; flattening onto white first is the fix. This tool encodes every image to JPEG at your chosen quality, then embeds it, which keeps a 20-photo PDF in the low megabytes instead of the hundreds.

Decode → flatten onto white → scale to fit → embed as one PDF
JPG / PNGin your orderCanvas flattenwhite backgroundScale to fitA4 / Letter / fitOne PDFone image per page

Every image becomes one page; A4/Letter pages scale the image to fit with a centered margin.

Scanning a signed contract back as one printable PDF

Maya photographed a four-page signed contract on her phone and needs to email one printable PDF — not four loose photos.

  1. Shoot:Maya photographs the four pages of a signed contract on her phone; the files land as IMG_2201 … IMG_2204, each 4000×3000
  2. Load and reorder:She drops all four, then uses the arrow buttons to fix the one page the phone named out of order
  3. Choose the page:She picks A4 with 24 pt margins — the image scales to fit inside the page instead of becoming a 55-inch page of its own
  4. Send:The PDF downloads at 1.8 MB; the print shop opens it and every page is A4 with the signature fully inside the margins
FAQ & detailsPage 3

To turn photos into one PDF: add your images, reorder them, choose A4 or US Letter, and convert — the PDF is assembled locally in your browser.

FreeToolHub JPG to PDF is a free browser-based tool that combines JPG, PNG, and WebP photos into a single printable PDF, no signup, no upload.

About this tool

What is this tool?

Convert JPG to PDF online free. Combine multiple photos into a single PDF, reorder pages, choose A4 or US Letter with margins, and download instantly. 100% browser-based - no upload, no signup, no watermark.

Reorder pagesA4 / US LetterMargins + qualityBatch combine

Page Size Is The Decision That Decides Whether It Prints

Most JPG-to-PDF tools quietly set each page to the pixel size of the image. That works fine on screen and fails on paper: a 4000x3000 photo becomes a 55-inch page that print shops silently rescale, cropping margins and shrinking your subject. Choosing A4 (595.28 x 841.89 PDF points) or US Letter (612 x 792 points) up front means the image is scaled to fit inside a real page with a centered margin, so what you see is what prints. Fit-to-image remains the right choice when the PDF will only ever be viewed or archived at full resolution.

Order, Transparency, and the Two Silent Failure Modes

File-system order is alphabetical, not the order you shot or scanned, which is why a reorder step before converting prevents a full re-do — swapping two pages in a finished PDF is far more work than moving them in a list. Transparency is the second trap: JPEG has no alpha channel, so a transparent PNG flattened onto nothing becomes solid black. Flattening onto white first fixes it and matches how the image looks in any viewer. Both are handled here before the PDF is assembled, not discovered afterwards.

What This Tool Is Not

This builds one PDF from images; it does not merge existing PDFs (use PDF Merge), compress an existing PDF (PDF Compress), or run OCR on scanned pages (PDF OCR first, then combine). It also does not re-encode to preserve every original byte — images are JPEG-encoded at your chosen quality inside the PDF, which is why a folder of 20 photos produces a few megabytes rather than hundreds. If you need lossless archival, keep the originals and treat the PDF as the distribution copy.

Frequently Asked Questions

Can I put several JPGs into one PDF, and control the order?

Yes — drop as many images as you like and reorder them with the up/down arrows before converting. The list order becomes the page order, so page 1 is whatever sits at the top. You can also remove any image from the list without starting over.

Should I use fit-to-image, A4, or US Letter?

Fit-to-image makes each page exactly the pixel dimensions of the photo, which is ideal for viewing and archiving but can print oddly — a 4000x3000 photo becomes a page over half a metre wide. A4 (210 x 297 mm) and US Letter (8.5 x 11 in) produce real paper-sized pages and scale each image to fit inside them, which is what you want for printing, sharing, or submitting to a portal. Orientation auto-matches each image, or force portrait/landscape.

Why does the quality setting matter, and what should I pick?

Every image is encoded to JPEG inside the PDF at your chosen quality. At 92 the result is visually identical to the source for photographs and keeps a 20-photo PDF in the low megabytes. Dropping to 60-70 roughly halves the file with visible softening on detailed images; raising it past 95 grows the file quickly for no visible gain. For text-heavy scans, use a higher setting to keep edges crisp.

My PNG has a transparent background — will it turn black?

No. JPEG, the format used inside the PDF, has no alpha channel, so a transparent PNG flattened onto nothing would render as black. This tool fills the canvas with white before drawing each image, so transparency becomes white — exactly how the image looks on a white page in a viewer.

Are my photos uploaded anywhere?

No. Decoding, encoding, and PDF assembly all run in your browser with pdf-lib. Your images never leave your device, so personal photos and confidential scans are safe.

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