For messaging, balance bytes and display size. For small text or diagrams, test one higher-resolution page before exporting the whole document.
Higher resolution also increases file size, processing time, and memory use. Choose it according to the real display size and whether the result will be enlarged or printed.
Start with these choices
Efficient for pages containing photos and smooth color gradients.
Useful when sharp edges and small characters matter.
Can reduce size when you control or know the receiving environment.
Test the smallest text on one page before exporting the batch
For a notice sent through messaging, test a page containing the smallest footnote. The crop below comes from the actual 1.5× PNG export. Distinguish text readable in the whole-page view from text that requires zooming.
Choose format and scale on this page before exporting the batch. The separate insight contains the nine-output byte and magnification comparison.
- Download file · PDFSource PDF to repeat the conversion
- View source image · PNG1.5× full-page PNG
- Read related articleMeasured PDF resolution and format comparison
Match JPG, PNG, or WEBP to the page content
JPG is efficient for photographs and smooth gradients. PNG preserves text, tables, and line art sharply but may be large. WEBP is useful for web and messaging when older software compatibility is not required.
- Photos and scanned magazines: JPG
- Documents, tables, and slide diagrams: PNG
- Web publishing and fast transfer: WEBP
- Unknown recipient environment: JPG or PNG
Screenshots and direct page rendering use different baselines
A screenshot depends on monitor scaling and window size and can miss content outside the visible area. Direct rendering produces multiple pages at one consistent scale, which is more reliable for batches and archives.
Choose resolution for actual display and enlargement
Default resolution is often enough for messaging previews and small web images. Higher scale helps for presentation zooming and print, but it cannot restore detail missing from a low-resolution photo embedded in the PDF.
Searchable text becomes fixed pixels
Vector text and lines in a PDF can remain sharp as you zoom. An image has fixed pixels and does not retain text selection, search, copying, or links. Keep the original PDF alongside important exports.
Split large high-resolution PNG jobs into batches
High-resolution PNG results and ZIP data can accumulate in browser memory. On mobile and lower-memory devices, select only the required range and process a long document in smaller groups.