🖼️

Geocache Image Tool

Reveal hidden coordinates and picture clues, or create your own visual hidden-message puzzle. Switch modes below — your images stay in your browser.

1) Load an image

Drop an image here or choose a file

Supports PNG, JPG, GIF, WebP and BMP. Preview updates as you move the sliders. PNG download uses full image resolution.

2) Reveal filters

Choose a filter below to uncover hidden writing. The revealed image preview updates instantly as you adjust it.

26×
3

Choose a filter to start revealing a clue.

3) Advanced photo adjustments

Tone & colour

0
0
0
0°
1.00

Levels & filter

0
255
0
0

Hidden pixel tools

255×
A higher bit level may reveal other encoded patterns. The viewer samples large photos for responsiveness; exported PNGs use every original pixel.
Use bit planes to inspect the least-significant bits of each colour channel. Hidden steganographic clues often appear in the lower bits.

Actions

For bit-plane analysis, choose a colour channel first. The bit-plane view uses original image data rather than tone adjustments.
Tip: faint puzzle text often shows up after increasing contrast, adjusting black/white points, then checking individual red, green and blue channels.
Original image
No image loaded
Adjusted image
Waiting for image

4) Pixel inspector

Original pixel

Position—
RGBA—
HEX—
Luma—

Adjusted pixel

Position—
RGBA—
HEX—
Luma—
Move or tap either image to inspect pixel values. Large photos use a reduced-size preview, but the PNG export retains full resolution. This is useful when a hidden clue depends on tiny colour differences or transparent pixels.

How to use this tool

  1. Upload a puzzle image or choose the sample test pattern.
  2. Increase contrast or adjust black/white points to reveal faint markings.
  3. Try individual red, green, blue, or alpha views to isolate hidden data.
  4. Use thresholding, inversion, grayscale, and bit-plane mode to inspect concealed pixel patterns.
  5. Download the adjusted result once the hidden clue is visible.