Changelog - Mark::Blocks Docs

2.3.0 (2026-09-21)

Deep optimization of editor input and preview: heavy block processing near the viewport is throttled with a per-pass budget; KaTeX, Mermaid and code highlighting are unified into one shared pipeline; scrolling and incremental updates no longer trigger full preview work.
Native scroll synchronization is no longer blocked by the 700 ms input debounce: intermediate events are filtered by 1px instead of 0.2% of the document and coalesced into a single in-flight call every 33 ms; WebView-side image backfill, formulas and diagrams wait for 180 ms of scroll quiet.
Optimized large-document opening, input scheduling and save concurrency; offscreen images load lazily and reclaim memory while keeping their display height to avoid placeholder jumps.

Document outline (TOC) navigation in the editor for quick jumps in long documents.
Pasting an image file path now inserts a Markdown reference automatically.
Expanded Markdown and editor settings (modeled on Typora’s settings habits).
Online image cache: HTTP/HTTPS images in the preview are cached locally in the app’s LocalFolder/OnlineImageCache (named by SHA-256 of the URL) as they approach the viewport; same-URL requests are merged with at most two concurrent downloads; the default cap is 128 MB (configurable 0–4096 MB, 0 disables and clears), evicted oldest-first; the Image settings page shows usage and manual clearing. Original documents and exported HTML always keep the original URLs — cache paths are never written.

Removed the image uploader (PicGo / PicList / custom command). Due to the Windows 8.1 Store sandbox and loopback restrictions, the upload path could not work reliably in real installs; pasting image files still generates Markdown references to local files.

Fixed a duplicate scrollbar in the settings page and unified the Metro styling of the outline and search UI.
The preview resource resolver now uses a native InMemoryRandomAccessStream, mitigating the Specified cast is not valid error when opening image documents.

Added a UWP Store packaging project targeting Windows 10 10240 and an ARM32 Store package; the Windows Phone package is now associated with the Store identity.

Fixed the save progress bar not showing when saving completed very fast (since 2.1.1).
Fixed Ctrl+S handling on Windows Phone (the emulator could not read shortcuts; Windows 10 Mobile worked fine).
2.2.0.1: minor corrections.

Fixed the Markdown preview not wrapping when typing in a newly created document.

First public release: Markdown writing and preview, Ctrl+F find, export to HTML.
Tile-style home screen for recent files and Metro-style file tabs.
Windows-exclusive Split View with synchronized scrolling; Windows Phone clean write / clean preview and immersive mode.
Three preview backgrounds (#1d1d1d gray, AMOLED Black, Tokyo Night); toggleable autosave; system-following accent color; Undo/Redo.
2.0.x: added transitions and fixed occasional preview issues.

For the full commit history and per-version sources, see GitHub Releases.