[BUG] Small images are upscaled to full page size in PDF export (regression from #231)

[ShowhyT]

Problem Description

After the fix introduced in #231, small images are being upscaled to fill the entire page in PDF export. An image that is physically small (e.g. 214×453px) should render at its natural size or scale to fit content width. Not stretch to the full printable page height.

Steps to Reproduce

1. Add a small portrait-oriented image to a note (e.g. 214×453px at 91 dpi)
2. Export the note to PDF
3. Open the exported PDF and observe the image size

Expected Behavior

Small images should render at their natural size (or scale proportionally to fit the content width if narrower than the page), without being upscaled to fill the full page height.

Actual Behavior

The image is stretched/upscaled to occupy the full printable page area, regardless of its original small dimensions.

Test Case

Image size	DPI	Expected render size	Actual render size
214×453px	91 dpi	~2.35×4.98in (natural)	Full page (~7.1×9.3in)

Environment

• OS: Windows 11
• Application Version: ZenNotes v2.7.0

Screenshots

PDF: Заметка 2026-06-24.pdf

Source Image:

[adibhanna]

Fixed for the upcoming v2.8.0 🎉

Root cause: a standalone local image is rendered as a styled .local-image-embed figure whose <img> carries width: 100% (correct on-screen, where it fills the frame). In the export window that stretched even a tiny image to the full content width, and the max-height: 9.3in cap added in #231 then turned that into a full page — so the fix you reported surfaced this regression.

Fix: in export, embedded images now size to their intrinsic dimensions, only ever scaling down to fit the content width or the page height, with the frame/caption shrinking to hug the image. Your 214×453 test case now renders at ~2.2×4.7in (natural), centered — verified with a real PDF export. Tall images still scale to fit the page as #231 intended, and wide images still cap to the content width.

Shipping in v2.8.0 (#269), commit f71d4b5. Thanks for the clear repro and the sample PDF — made this easy to pin down! 🙏