Base64 Visual Editor – v1 (Leopardo-ready)

Choose PNG/JPEG/WebP…

We keep the data URL prefix automatically; mutations affect only the Base64 payload.

Protect first chars (preserve header area for better decode odds)

Remove every Nth char
0 = off

Line width (wrap)
Used for “remove every Nth line”

Remove every Nth line
0 = off

Chunk size (chars)
0 = off

Shuffle seed
Used when chunk size > 0

Delete range start
length

Duplicate range start
length

Insert dup at index

Find
Replace

Auto pad (=) to /4
Allow invalid decode (show error)

Original

Mutated