A fully offline Android font viewer and inspector
- Completely offline. No permission required.
- Browse & preview local font files (.ttf, .otf, .woff, .woff2)
- Live editable font preview with size, bold, italic controls
- Glyph keyboard for showing all characters in the font
- Metadata viewer and editor
- Favorites system
- Multiple sample texts support with configurable priority
- Open the
FontLens/folder - Wait for Gradle sync
- Run ▶ on a device or emulator (min SDK 26)
Push to main or master — the workflow builds a debug APK automatically.
Download it from the Actions tab → latest run → Artifacts.
If gradle/wrapper/gradle-wrapper.jar is missing, run once locally:
gradle wrapper --gradle-version 8.4This generates the gradlew binary and .jar needed by CI.
app/src/main/
├── AndroidManifest.xml
├── java/com/fontlens/
│ ├── FontPreviewActivity.kt
│ ├── MainActivity.kt
│ ├── data/
│ │ ├── FontCache.kt
│ │ ├── FontData.kt
│ │ └── FontRepository.kt
│ ├── ui/
│ │ ├── DeleteFontDialog.kt
│ │ ├── LoadingDialog.kt
│ │ ├── glyph/
│ │ │ ├── GlyphAdapter.kt
│ │ │ └── GlyphFragment.kt
│ │ ├── info/
│ │ │ └── FontInfoFragment.kt
│ │ ├── list/
│ │ │ ├── FavoritesFragment.kt
│ │ │ ├── FontListAdapter.kt
│ │ │ └── FontListFragment.kt
│ │ ├── meta/
│ │ │ ├── MetaAdapter.kt
│ │ │ ├── MetaEditFragment.kt
│ │ │ └── MetaFragment.kt
│ │ ├── preview/
│ │ │ ├── PreviewFragment.kt
│ │ │ ├── StandaloneGlyphFragment.kt
│ │ │ ├── StandaloneInfoFragment.kt
│ │ │ ├── StandaloneMetaFragment.kt
│ │ │ └── StandalonePreviewFragment.kt
│ │ └── settings/
│ │ └── SettingsFragment.kt
│ └── utils/
│ ├── FontLoader.kt
│ ├── FontMetadataEditor.kt
│ ├── FontParser.kt
│ ├── StorageDeleteHelper.kt
│ ├── ThemeManager.kt
│ └── TypefaceLoader.kt
└── res/
├── color/
│ ├── nav_item_color.xml
│ └── switch_track_color.xml
├── drawable/
│ ├── bg_accent_btn.xml
│ ├── bg_badge.xml
│ ├── bg_bottom_sheet.xml
│ ├── bg_delete_btn.xml
│ ├── bg_drawer_item.xml
│ ├── bg_glyph_cell.xml
│ ├── bg_input.xml
│ ├── bg_loading_dialog.xml
│ ├── bg_search_small.xml
│ ├── bg_sheet_handle.xml
│ ├── bg_spinner.xml
│ ├── bg_style_btn.xml
│ ├── bg_style_btn_active.xml
│ ├── ic_add.xml
│ ├── ic_back.xml
│ ├── ic_launcher_foreground.png
│ ├── ic_library.xml
│ ├── ic_search.xml
│ ├── ic_settings.xml
│ └── ic_star.xml
├── layout/
│ ├── activity_font_preview.xml
│ ├── activity_main.xml
│ ├── bottom_sheet_sort.xml
│ ├── dialog_add_lang.xml
│ ├── dialog_delete_font.xml
│ ├── dialog_loading.xml
│ ├── fragment_font_info.xml
│ ├── fragment_font_list.xml
│ ├── fragment_glyph.xml
│ ├── fragment_meta_edit.xml
│ ├── fragment_metadata.xml
│ ├── fragment_preview.xml
│ ├── fragment_settings.xml
│ ├── item_drawer_folder.xml
│ ├── item_edit_field.xml
│ ├── item_folder_header.xml
│ ├── item_font_card.xml
│ ├── item_glyph_cell.xml
│ ├── item_info_row.xml
│ ├── item_lang_setting.xml
│ └── item_meta_row.xml
├── menu/
│ └── bottom_nav_menu.xml
├── mipmap-anydpi-v26
│ ├── ic_launcher.xml
│ └── ic_launcher_round.xml
├── navigation/
│ └── nav_graph.xml
├── values/
│ ├── attrs.xml
│ ├── colors.xml
│ ├── dimens.xml
│ ├── strings.xml
│ └── themes.xml
└── values-night/
└── themes_night.xml
This app is made by/with help of
- Claude AI [For coding help]
- Termux (Android) [For version control]
- Github-Action [To build]
No Laptop/Computer is used.
Copyright (C) 2026 Md. Rasel Molla
This program is free software. You can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.