CBM Disk Editor
A free, browser-based editor for Commodore 8-bit disk images. Open, edit, and save D64 (1541), D71 (1571), D81 (1581), D80 (8050), D82 (8250), G64, X64, DNP (CMD Native), D1M/D2M/D4M (CMD FD-2000/FD-4000), T64 and TAP tape images, and CVT GEOS files. Runs entirely in your browser — nothing is uploaded, no account, no install.
Looking for an online alternative to desktop tools like DirMaster, CBMXfer or c64tools? CBM Disk Editor works cross-platform on Windows, macOS, Linux and ChromeOS — no installer, no emulator, no file upload. Open this page, drop a disk image onto the window, and edit.
Features
- Full BAM viewer with integrity checking, per-file fragmentation, track usage and a radial Disk Map
- Viewers for hex, BASIC (V2 / V3.5 / V7 / Simons' / Final Cartridge III), PETSCII, 6502 / 6510 disassembly, graphics (24+ formats including Koala, Art Studio, FLI, IFLI, sprites and charsets), REL records, SEQ files
- GEOS tooling: geoPaint, Photo Scrap / Album, geoWrite (with RTF / PDF export), font viewer, C64 charset export (.prg), CVT import / export
- Archive extraction: LYNX (.lnx) and ZipCode (1!–4!)
- CMD Native: nested subdirectories, DNP track resize with auto-compaction, byte-exact VICE compatibility
- Drag-and-drop open, multi-tab interface, recent-files list, disk comparison and hashing (CRC32, SHA-256)
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