What permissions does Filemark need?

Only storage by default. Local file rendering needs 'Allow access to file URLs' (a per-extension Chrome toggle); remote rendering is an optional host permission you grant from the options page. No data ever leaves your browser.

Can I stop Filemark rendering on a specific site?

Yes. Add a site rule on the options page in Exclude mode (e.g. *://*.github.com/*) to never render there, or Include mode to force-allow. Include wins over Exclude for carving exceptions.

Configuration

Settings & permissions

Open the options page from the gear icon in the toolbar (or chrome://extensions → Filemark → Options). It's a left-nav settings shell.

File formats

Toggle each of the nine formats (md, mdx, json, jsonc, csv, tsv, sql, prisma, dbml) on or off independently. A disabled format falls back to Chrome's default handling — so disabling CSV makes .csv download normally again.

Remote URLs

Rendering raw files served over https:// needs an optional host permission, off by default. Flip the “Render remote files” toggle and approve Chrome's one-time prompt; revoke it any time from the same switch. See Local & remote files.

Site rules

Fine-grained control with Chrome match patterns:

Exclude — never render on matching URLs (e.g. *://*.github.com/*, or *://*/* for everywhere).
Include — force-allow on matching URLs. Include wins over Exclude, so you can exclude a whole domain and carve out one path.

Each rule can be enabled/disabled or deleted; there are recipes for the common cases.

JSON viewer

Defaults for the JSON tree:

Theme (nine options) and collapse depth (None / 1–5).
String truncation length (0–400 chars) and copy indent (0–8 spaces).
Toggles for data-type chips, object-size badges, and clipboard icons.

Keyboard shortcuts

Enable/disable shortcuts globally or per action, and remap any of them by clicking the chord and pressing a new combo. Full list and details on the Keyboard shortcuts page.

Help & support / Reset

The Help section links to these docs, the website, the GitHub repo, and the issue tracker. Reset restores all options to their defaults (it does not touch your library, folders, or stars).

Permissions & privacy

storage — saves your settings, library, and recents locally.
file URLs — a per-extension toggle in chrome://extensions for rendering local files.
remote host access — optional, opt-in, revocable.

100% local

Filemark runs entirely client-side — no server, no telemetry, no uploads. Manifest V3 with a strict CSP (no remote code). See the privacy page.