Font Editor 0.1.3

A magnified preview window, whole-font editing, a Recent Files list, and codepoints that are no longer stuck at 255.

What's new

• Magnified Preview window (View ▸ Magnified Preview…) — pop the font out into its own resizable window at 1×/2×/4× zoom, with square or half-width pixels and an optional wrap toggle. It keeps its own editable preview text, seeded from the main window's the moment it opens, and closes automatically with the main window.
• Whole-font editing — Edit ▸ Whole Font applies clear/invert/flip/shift to every glyph at once as a single undo step. Shift-drag the advance-width marker to set one width across every glyph; Ctrl+Shift-drag applies a relative adjustment instead, previewed live in the character map before you let go.
• Character map improvements — codepoints now show hex and decimal together, in full-brightness text; double-clicking a codepoint opens the remapping dialog directly.
• Swap With Reference Glyph (Ctrl+Shift+X) — exchange the selected glyph's bitmap and advance width with its pinned reference in one move.
• Codepoint tools — Add Codepoint Before/After (Ctrl+[ / Ctrl+]) for a quick, dialog-free neighbor of the current selection; Renumber Codepoints to close gaps into a contiguous run, moving artwork and mappings together; Trim to Codepoint Range to discard everything outside a range. Codepoints are also no longer capped at 255 — any valid Unicode codepoint up to 0x10FFFF is allowed, for fonts that need to reach past the extended-ASCII range.
• Recently opened files — a File ▸ Recent Files submenu, with stale entries (files that have since moved or been deleted) cleaned up lazily rather than left to error out.
• Mapping dialog now accepts either the character itself or its Unicode codepoint (decimal or hex, e.g. 0x20AC), switching between them with linked radio buttons.
• New ASCII-only Helpers — populate just codepoints 32-127, in stock ASCII or the SAM Coupe variant, alongside the existing full 256-codepoint CP437 helpers.
• Clicking the preview strip now toggles its black/white background too, in addition to the existing View menu item.
• The default preview text now runs through the rest of the printable ASCII set after the numbers, so a fresh font exercises the whole set at a glance.

Downloads

Windows, macOS (Intel and Apple Silicon), and Linux builds are all attached below. The Windows and macOS builds are unsigned, so you'll see a SmartScreen/Gatekeeper warning on first run — that's expected.

Verifying your download

52caef1e990aacdce918b9066354caf45760346b6141f2f349c2927dc315b731  Font.Editor-0.1.3-arm64.dmg
0aa5b75f8b3d573c652f62a0e117a015c04562c64dd9f20dcd33ecaaa3a7fdc3  Font.Editor-0.1.3.AppImage
6dcca275568966d9f7e49217d1837b9b41876d38de73659263530fd925f8f3f9  Font.Editor-0.1.3.dmg
a712871bf51e761f7a227646edf19371d0719c1d7c8fb6852cae29c4d7650755  Font.Editor.Setup.0.1.3.exe

(also attached as SHA256SUMS)

Full Changelog: v0.1.2...v0.1.3

Font Editor 0.1.2

Raw font import, font metadata, an in-app docs viewer, and a much bigger sample library — plus two Windows layout bugs fixed along the way.

What's new

• Import Raw Font Bitmap — load glyphs straight from a raw binary dump (a ROM extract, another tool's output). Start codepoint, geometry, and byte layout (row-major or column-major) are all configurable, and a short final character is padded with zeroes rather than rejected.
• Font metadata — File ▸ New Font and Font ▸ Font Properties now capture a name, author, email, and description, all optional. Created/modified dates are stamped by the save path itself; fixed- vs. variable-width is computed from the glyphs on demand, so it can never drift from what the font actually is.
• Character map overflow rendering — thumbnails for variable-width glyphs now show the whole cell, tinting the region past the advance marker dark red instead of hiding it.
• Column guide visibility moved from a global preference to per-font state, saved with the font and defaulting to hidden.
• In-app documentation — Help ▸ User Guide and Help ▸ File Formats Reference open the docs in their own window, pre-rendered to static HTML at build time.
• A much bigger sample library — retro system font ROM dumps (Amstrad CPC, Atari ST, BBC, MSX, Master System, Sinclair QL, ZX Spectrum, Apple II, C64) for exercising raw import, plus a new ZX Spectrum sample font. Bundled into every packaged build; Help ▸ Open Sample Fonts Folder points straight at it.
• Two Windows layout bugs fixed: the character map and the glyph-info readout could get pushed off-screen at certain window/sidebar widths.

Fill From System Font is implemented but stays disabled for now — Canvas 2D has no access to real TrueType hinting, so results at small sizes aren't good enough yet.

Downloads

Windows, macOS (Intel and Apple Silicon), and Linux builds are all attached below. The Windows and macOS builds are unsigned, so you'll see a SmartScreen/Gatekeeper warning on first run — that's expected.

Verifying your download

9623149cb7cda013e699814f180492510486ab4233ab037498b968859b5a103b *Font.Editor.Setup.0.1.2.exe
a0d75e0734c6f222d37c8da724bf0a150bd49bd9e7073f582d19f777f8d495f5 *Font.Editor-0.1.2.AppImage
466bf0d2164f942125c6f68dc489fcb7c66430b6e9bd0591e16c82ad3effadbb *Font.Editor-0.1.2.dmg
69c420d131bb7b37d88540942651ef56c1eec4e0754c682616143a8fb30d2d31 *Font.Editor-0.1.2-arm64.dmg

(also attached as SHA256SUMS)

Full Changelog: v0.1.0...v0.1.2

Font Editor 0.1.0

First packaged build of the bitmap font editor — a desktop editor for monochrome
bitmap fonts, variable or fixed width, aimed at retro and embedded targets.

Download

Font Editor Setup 0.1.0.exe — Windows x64 installer, 78 MB.

SHA-256  8f176962a830a63b856dcc1fa794e356f63bc9410e919064521afe3a3bcd34fe

The installer is not code-signed, so Windows SmartScreen will warn on first
run — More info ▸ Run anyway to proceed, or verify the hash above first. It
installs per-user, so it does not need administrator rights.

Windows only for now. electron-builder only builds for the platform it runs on,
and the macOS and Linux targets (DMG and AppImage) are configured but have not
been built or tested.

What it does

• Draw glyphs on a cell up to 32×32 pixels, with a draggable per-glyph advance
  width marker and Font ▸ Fit Width to Ink to snap it to the artwork.
• Five font-wide guidelines — cap height, x-height, baseline, and left/right
  column guides for drawing something like a 6x8 font on an 8x8 grid.
• Character map over codepoints 0–255, defaulting to CP437 with the SAM Coupé
  substitutions, with shift-click to pin a reference glyph behind the one you
  are editing.
• Undo/redo, glyph copy/paste, clear, invert, flip and shift, and a live preview
  of editable sample text.

Projects save as .fnt.json and round-trip losslessly. File ▸ Export Font…
writes a 1bpp .bin alongside .widths.json and .map.json sidecars; the exact
layout is in docs/file-formats.md,
and docs/user-guide.md
walks through the editor end to end.

Notes

The app icon is placeholder artwork, generated by scripts/make-icon.mjs.

This build embeds Electron 31.7.7 and, through it, Chromium, Node.js and ffmpeg.
Their licence notices ship inside the installed application directory as
LICENSE.electron.txt and LICENSES.chromium.html. The editor's own source is
MIT.