GuoheView

Customize

You can tailor GuoheView's window title and context menu to your own habits. Go to Settings → Customize; changes take effect immediately without a restart.

Shortcuts can be customized too — see the "Custom shortcuts" section in Viewing & Shortcuts.

Custom window title

By default the window title is GuoheView — file name. If you would like the title bar to show the resolution, file size, or which image in the folder this is, combine them with a title template.

How to edit

  1. Open Settings → Customize → Window title.
  2. Below the editor, all variables are listed in groups: File / Location / Size / Time / Browsing. Click a variable to insert it into the editor, or drag it to any position in the editor.
  3. Type any text between variables as a separator, such as a space, ·, | or -.
  4. The "Preview" below the editor shows the result live, using a sample image.

Clear the editor (or click "Reset to default") to go back to the default title. When no image is open, the title is always GuoheView; while an image is still loading, a temporary hint such as "(Loading original)" is appended to the title.

Template examples

Template Resulting title
{filename} - {resolution} sample.jpg - 3840×2160
{name} · {filesize} · {position} sample · 2.4 MB · 3/128
[{folder}] {filename} ({zoom}) [2026] sample.jpg (100%)
{filename} {width_cm}×{height_cm} cm {dpi}dpi sample.jpg 32.5×18.3 cm 300×300dpi
{app} - {path} GuoheView - D:\Photos\2026\sample.jpg

All variables

The example values below are all calculated from the same sample image: D:\Photos\2026\sample.jpg, 3840×2160, print resolution 300 DPI, 2.4 MB, image 3 of 128 in its folder.

File

Variable Meaning Example
{filename} File name (with extension) sample.jpg
{name} File name (without extension) sample
{ext} Extension, upper case, without the dot JPG
{filesize} File size 2.4 MB

Location

Variable Meaning Example
{folder} Name of the containing folder (last level only) 2026
{dir} Full path of the containing folder D:\Photos\2026
{drive} Drive letter (network paths show as \\server\share) D:
{path} Full path D:\Photos\2026\sample.jpg

Size

Variable Meaning Example
{resolution} Resolution (width×height, pixels) 3840×2160
{width} / {height} Width / height (pixels) 3840 / 2160
{width_cm} / {height_cm} Print width / height (centimeters, one decimal, no unit) 32.5 / 18.3
{dpi} Print resolution, horizontal×vertical 300×300
{megapixels} Megapixels 8.3 MP
{aspect} Aspect ratio 16:9
{orientation} Orientation Landscape / Portrait / Square

Time

Variable Meaning Example
{mtime} File modified time 2026-09-01 14:23
{mdate} File modified date 2026-09-01
{ctime} File created time 2026-08-20 09:05
{cdate} File created date 2026-08-20

Browsing

Variable Meaning Example
{index} Position of the image in the current folder 3
{total} Total number of images in the current folder 128
{position} Index/total 3/128
{zoom} Current zoom level, updated live while zooming 100%
{app} App name GuoheView

Details

  • Values that aren't available show as empty — you won't see numbers like 0×0 or 0/0. For example, while the folder is still being counted, {position} is temporarily empty.
  • Aspect ratio: if it reduces to an integer ratio with both sides at most 99, it is shown like 3:2 or 16:9; unusual cropped sizes are shown as a decimal ratio like 1.85:1.
  • Print size and DPI: DPI is read from the print resolution stored in the image (EXIF / JFIF). If the image has none, or the value is clearly unreasonable, 72 DPI is used. {width_cm} / {height_cm} output only the number, so write the unit in the template yourself.
  • Misspelled variables (such as {fliename}) are shown as-is in the title, so you can spot and fix them.

Custom context menu

The context menu shown when an image is open can be freely trimmed, extended and reordered, and you can put frequently used actions into submenus of your own.

This only affects the context menu when an image is open. The context menu without an image stays fixed.

Editor layout

Settings → Customize → Context menu has two columns:

  • Left column, "Available": actions that are not in the menu yet. "Separator" and "New submenu" always stay here and can be dragged in as often as you like.
  • Right column, "Menu": the context menu as it is now, from top to bottom; submenu contents are indented below their submenu.

The default menu already contains every action, so when you first open the editor the left column only has "Separator" and "New submenu". Remove an action on the right and it returns to the left column.

Adding actions

Drag an action from the left column to where you want it on the right. An insertion line shows where it will land; release to drop it. You can also double-click an item in the left column to append it to the end of the menu.

Available Menu → Separator New submenu Print... Text recognition Copy image × Copy file × Copy more ▸ × Rename × Image info × Settings Text recognition × Text recognition

Reordering and submenus

In the right column, hold an item and drag it up or down to reorder. Drag it into the indented area under a submenu to put it in that submenu; drag it out of a submenu to move it back out.

Menu Copy image × Rename × Print... × Image info × More ▾ × Set as wallpaper × Print... × Settings Print...

Removing, separators and submenus

  • Remove: click the × at the end of an item in the right column, or drag it back to the left column. Removed actions return to the left column and can be added back at any time.
  • Separator: drag "Separator" from the left column between two items. When the menu opens, separators at the start, at the end, or next to each other are merged or hidden automatically, so you never get empty gaps.
  • New submenu: drag "New submenu" from the left column into the right column, then drag actions under it.
  • Rename: select a submenu in the right column, and a "Submenu name" box appears above — just edit it.
  • Reset to default: click "Reset to default" below the editor to restore the original menu.

Rules and limits

  • Two levels at most: a submenu can only hold actions and separators, not other submenus.
  • Each action appears only once: actions already in the menu are not listed in the left column.
  • "Open with" and "Collect" are single blocks: their sub-items are generated by the app for the current image (for example, which installed programs can open it), so they can only be moved or removed as a whole — not split up or placed into another submenu.
  • "Settings" must stay: it has no × and cannot be dragged back to the left, so you can never lose the way into Settings after editing the menu.
  • Items that show or hide based on the current state work as usual, wherever you put them:
    • "Fullscreen" and "Borderless mode" change to "Exit fullscreen" and "Exit borderless" while active.
    • "Show minimap" only appears after the minimap has been hidden; "Show reading bar" only appears after the reading bar for long images has been hidden.
    • "Text recognition" only appears when the OCR plugin is installed and the current image can be recognized.
    • If none of the items in a submenu are currently available, the whole submenu is hidden for now.

Available actions

Action Shortcut Default position
Copy image Ctrl+C Top level
Copy file Ctrl+Shift+C Top level
File name / full path / resolution (copy) "Copy more" submenu
Rename F2 Top level
Save as... Ctrl+S Top level
Edit image Top level
Print... Ctrl+P Top level
Open file location Top level
Image info Top level
Text recognition Top level (requires the OCR plugin)
Collect Top level (single block)
Show minimap Top level
Show reading bar Top level
Settings Top level (must stay)
Delete Delete Top level
Always on top Top level
Borderless mode Top level
Fullscreen F11 Top level
Open with Top level (single block)
Set as wallpaper "More" submenu
Exit Esc Top level

The shortcuts shown in the table and on the right side of the menu are the defaults.