Support | JPG to PDF Help and Troubleshooting

Start with the symptom

Most conversion problems come from one of four places: the source image is too large or low quality, the browser is running out of memory, the file format is only partly supported, or the export settings do not match the job. Use the sections below to isolate the cause before changing several settings at once.

PDF is larger than expected

PDF size is mostly driven by source image dimensions, number of pages, DPI target, compression level, and whether you place one or multiple images per page. A phone photo can be 3000 to 5000 pixels wide even if it looks small on screen, so a batch of receipts can grow quickly.

For email or upload portals, start at 120 to 144 DPI with medium-high compression.
For forms that contain small text, try 144 to 180 DPI before increasing compression aggressively.
Enable Strip metadata to remove camera information that does not help readability.
Use 2-up or 4-up layouts only when the final pages will still be readable.

Output looks blurry or text is hard to read

Blurry output usually means the source image was soft, the DPI was set too low, compression was too strong, or Fill cropped/scaled the image in a way that lost detail. If the original photo is blurred by camera shake, the converter cannot restore sharp text.

Use Fit for documents where the full page edge must remain visible.
Use 180 to 220 DPI for screenshots or photographed documents with small text.
For print, use 240 to 300 DPI and lower compression if file size allows.
Review one exported page before converting a large batch.

Phone browser reloads, freezes, or becomes slow

On-device conversion uses your browser memory. Phones and tablets have less memory available to a tab than a desktop browser, and mobile operating systems may reload a tab if it uses too much memory in the background.

Try 15 to 30 images per batch on older phones, then merge smaller outputs if needed.
Close heavy tabs and apps before exporting a large set.
Lower DPI before lowering quality if the browser is struggling.
On iPhone, keep Safari active while the PDF is being generated.
On Android, use current Chrome or another modern Chromium browser.

HEIC, HEIF, AVIF, or WebP files do not import

Format support is partly controlled by your browser. JPG, JPEG, PNG, and WebP are broadly supported in modern browsers. HEIC and HEIF support is strongest in Apple environments and can be inconsistent elsewhere. AVIF support has improved, but some older browsers still fail to decode it locally.

If HEIC fails on Android or Windows, export the photo as JPEG first and retry.
If a preview fails but the file is important, convert a single file first before adding the full batch.
For screenshots with sharp text, PNG may look cleaner than a heavily compressed JPEG.
For photos, JPEG usually gives smaller PDFs than PNG at similar visual quality.

Images appear sideways

Phone cameras often store orientation in EXIF metadata instead of rotating the pixels directly. The converter tries to respect rotation, but mixed sources can still produce unexpected orientation.

Use the rotate controls before exporting.
Enable Strip metadata to normalize the final PDF and remove unneeded EXIF data.
If several files from the same app rotate incorrectly, save/export them again from your photo editor before converting.

Download or sharing fails

Some browsers block downloads when storage is low, private browsing is active, or a corporate/school device restricts file saving. Very large PDFs can also fail when a share sheet tries to copy the whole file into another app.

Check free storage on the device.
Try Download before Share if the share sheet fails.
Use a smaller batch and lower DPI if the generated file is very large.
On iPhone, save to Files first, then share from Files if direct sharing fails.

Recommended first fixes

Problem	First setting to try	Why it helps
File too large	144 DPI, medium-high compression	Reduces pixel data while preserving readable text.
Small text blurry	180 to 220 DPI, medium compression	Keeps more detail before compression is applied.
Phone reloads	Smaller batches, 120 to 144 DPI	Lowers memory pressure in the browser tab.
Wrong rotation	Rotate manually, Strip metadata on	Normalizes orientation in the final export.

Guided help

Contact support

Email jpegtopdf@gmail.com. Include your device, browser, source file type, approximate number of images, the setting profile you used, and the step that failed: add files, preview, reorder, convert, download, or share. Please do not email sensitive source files unless you are comfortable sharing them.

Reviewed on April 29, 2026 by JPEGtoPDF.io. See About, Editorial Policy, and Privacy.