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Output Settings

JPEG = All plansPNG/WEBP & PDF = ProTrim & Watermark = Unlimited

What you'll learn

Image format (JPEG = All plans / PNG & WEBP = Pro)
Auto-trim (Unlimited): safe margin and max trim per side
How direct PDF output and PDF splitting work

1Where to find Output settings

All settings for how captured images are saved and processed are in the Output tab under Settings → Capture Settings. The three areas are: Image Format, Auto-trim, and PDF splitting. Watermark settings are configured separately under Settings → Watermark Settings.

2Image Format

Choose the file format in which captured images are saved.

Format	Description	Plan
JPEG	Small file sizes; the standard choice for photos and book pages.	All plans
PNG	Lossless format. Text and lines stay crisp; files are larger.	Pro and above
WEBP	High compression with excellent image quality.	Pro and above

TIFF and AVIF are not available as output formats (they are outside the ePub specification). You can still open and process images in those formats as input.

Delete temporary files after processing

When Delete temporary files after processing is enabled, the original captured image files are automatically deleted once packaging into PDF or ePub is complete. This is useful when you only want to keep the final output. Leave it off if you also want to keep the individual source images.

3Auto-trim Unlimited

Auto-trim automatically removes unwanted margins around captured images, so even if the capture area includes a little extra space, your output stays consistent.

Before trimming: captured image with margins around the content — **Before**: the red area is the margin around the content (it will be trimmed automatically)

After trimming: image with margins removed — **Before**: the red area is the margin around the content (it will be trimmed automatically)

Illustration is in the public domain (Harry Clarke, 1919), used here to demonstrate how extra margin can appear around captured content.

Enable — Turn Auto-trim on or off.
Sides to trim — Choose which sides (top, bottom, left, right) to trim.
Safe margin — Amount of margin (px) to preserve around the content so it is not over-cropped.
Max trim per side — Maximum number of pixels that can be trimmed from any single side. If the actual margin exceeds this limit, trimming stops at the limit and some margin remains. Increase this value if you want to trim more (default is 50 px, which may be conservative for large images).

Safe margin: the margin kept around the content (the green line is the trim boundary). A smaller value crops closer to the content; a larger value leaves more space.

Max trim per side: if the margin exceeds this value, each side is trimmed only up to this limit and the rest remains. Increase the value to trim more (default 50 px).

If margins are not fully removed or you want tighter cropping, increase "Max trim per side" (the default of 50 px can be conservative for large images). Conversely, if you are worried about cropping into the content, increase "Safe margin" to preserve more space. To crop as tightly as possible, set Safe margin to 0. (Defaults: Safe margin 15 px / Max trim per side 50 px)

4Save as PDF & PDF splitting Pro and above

You can save captured images directly into a single PDF. This is a mode that builds a PDF on the fly during capture.

Save as PDF — Each captured page is written directly into one PDF as it is captured (direct PDF output mode). In this mode, individual image files are not saved — only the PDF is kept.
PDF split size (MB) — When the PDF reaches this size, a new file is started (capture_part01.pdf, capture_part02.pdf, …). Set to 0 to disable splitting and produce a single file (capture.pdf).

If you want to keep individual images as well, turn Save as PDF off here and save as images instead. After capture, use the Image Processing Tool to create a PDF. There you can select specific pages (using checkboxes) before exporting, and with Unlimited you can produce a text-searchable PDF (with embedded OCR text).

Exporting to PDF and other output formats requires Pro or above (not available on Starter). For creating ePub files with OCR text, see ePub Creation.

5Watermark Unlimited

Watermark settings are found under Settings → Watermark Settings. With the Unlimited plan, you can add your own text watermark to output files. You can customize the text as well as its position, color, angle, opacity, and outline.

Adding and customizing watermarks is exclusive to Unlimited. Lower-tier plans cannot open Watermark Settings (no watermark is applied). Even on Unlimited, leaving the watermark text blank will produce output with no watermark. For a full comparison of plan features, see Licenses and Plans.

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