Compare two revisions of a PDF, side by side.
Drop the older and newer documents above, then hit Compare. Pages are paired side by side with synchronised scrolling — where one document has extra content the other side waits, so matching sections stay level. Hover over text to outline the matching sentence or table cell on the other side; hovering a highlighted change outlines the corresponding changed text instead. Use n/p to jump between changes, h to toggle highlights, and Ctrl+scroll (or +/−) to zoom.
Drop the older and newer documents above, then hit Compare. Pages are paired side by side with synchronised scrolling — where one document has extra content the other side waits, so matching sections stay level. Hover over text to outline the matching sentence or table cell on the other side; hovering a highlighted change outlines the corresponding changed text instead. Use n/p to jump between changes, h to toggle highlights, and Ctrl+scroll (or +/−) to zoom.
Deleted from older
Added in newer
Smaller images re-compresses the photos and figures embedded in the file —
oversized ones are downscaled and everything is re-encoded as quality JPEG — while the
pages themselves are never rasterised: text stays selectable, searchable and comparable.
This is usually where huge report files shrink the most.
Lossless clean-up rewrites the file with compressed object streams and drops unused objects and stale incremental-save data. Text stays selectable and nothing is re-encoded, so savings are modest unless the file carries dead weight.
The JPEG presets re-render every page as a photo at the chosen detail — this is where huge files (scans, image-heavy reports) shrink dramatically. The trade-off: text in the output is a picture, so it can't be selected or searched, and such pages can't be text-compared later. 200 dpi still prints crisply; 110 dpi is for email-sized copies. If the result wouldn't be smaller than the original, nothing is downloaded.
Lossless clean-up rewrites the file with compressed object streams and drops unused objects and stale incremental-save data. Text stays selectable and nothing is re-encoded, so savings are modest unless the file carries dead weight.
The JPEG presets re-render every page as a photo at the chosen detail — this is where huge files (scans, image-heavy reports) shrink dramatically. The trade-off: text in the output is a picture, so it can't be selected or searched, and such pages can't be text-compared later. 200 dpi still prints crisply; 110 dpi is for email-sized copies. If the result wouldn't be smaller than the original, nothing is downloaded.