This migration accepts only the documented canonical VGS/MEM writer form. Unknown or non-zero wrapper fields outside the published canonical constants cause refusal so no wrapper metadata is silently discarded. The raw target and the reconstructed VGS rollback source must both validate exactly.
Emulator & Retro Tools
PS1 VGS to Raw MCR Memory Card Migrator
Losslessly extract a canonical VGS/MEM PS1 memory-card representation to raw MCR only when the complete source wrapper can be reproduced byte-for-byte from the embedded card.
01 / Tool workbench
Use the runtime only when it is actually ready.
The application shell fails closed. An input interface is not enabled merely because a WordPress Tool record exists; the declared engine must be registered in the current build.
Session change summary
No output has been built in this session.
02 / Compatibility
Know the supported input before opening a file.
Compatibility fields are intentionally explicit. Missing values stay unclaimed rather than being filled with generic assumptions.
Accepted extensions
.vgs.mem
Platforms
PS1
Supported versions / editions
Canonical VGS/MEM writer representation -> raw 128 KiB PS1 card.
Input constraints
Exactly 131,136 bytes; canonical VgsM header with only documented writer constants; embedded strict 128 KiB PS1 card; byte-identical source reconstruction required.
Known limitations
Lossless canonical-representation migration only. Non-canonical VGS/GME wrapper metadata, ambiguous versions, invalid PS1 checksums/chains, lossy field mappings, checksum regeneration, game-payload editing, source mutation, signing/encryption work, and guessed game-specific version upgrades are refused.
Output / result
Exact 131,072-byte raw MCR, byte-identical VGS rollback artifact, and deterministic migration report.
03 / Instructions
Use a reversible workflow.
File-oriented workflows start with an untouched original. Tool-specific instructions add only details documented for this utility.
- 01Keep the original
Preserve an untouched copy before creating or transforming binary output.
- 02Confirm scope
Match the file size, format, platform, and version to the support information on this page.
- 03Process locally
Use the runtime only when the page reports that its declared engine is loaded.
- 04Validate output
Compare or test the result before replacing any working source file.
Tool-specific steps
Choose a canonical VGS/MEM file. SaveEditor proves the wrapper is fully reconstructible before exposing the raw card.
04 / Privacy and processing
The processing mode is part of the product contract.
SaveEditor.com should state local processing only when the implementation truly keeps file contents in the browser. Server or hybrid processing must be disclosed just as clearly.
Declared mode
Browser local
Runtime state
Operational
Tool-specific privacy notes
Phase 56 performs migration entirely in the browser on the explicitly selected local file. The migration-v1 runtime has no fetch, XMLHttpRequest, WebSocket, sendBeacon, FormData upload, server-side save processing, or telemetry path. The permanent 16 MiB ceiling remains in force. The selected source is never mutated; output is authorized only after exact raw-payload preservation, strict target reopen, and byte-identical rollback reconstruction are all proven.
05 / Troubleshooting
When a file is rejected, do not force it.
A rejection can indicate an unsupported size, format, version, platform, or byte sequence. Preserve the original and correct the input instead of bypassing validation.
Re-check the documented input type and browser size limit before retrying.
A generic converter does not imply support for every game-specific container, signing scheme, or serialization format.
Return to the untouched source instead of repeatedly processing a damaged or partially transformed file.
Known Tool issues
VGS files with comments, unknown/non-canonical header values, bad embedded checksums, or invalid chains are refused.
06 / Verification
Support claims should be traceable.
The verification date, method notes, and public references are kept separate from marketing language so compatibility can be reviewed over time.
Last verified2026-08-10
Profileps1-vgs-to-raw-memory-card-migrator
Method notes
Verified against an independent implementation of the documented VGS/GME writers, deterministic raw-card fixtures, exact target byte vectors, strict source/target reopen, source immutability, byte-identical rollback reconstruction, SHA-256 binding, malformed/non-canonical refusal, no-network static checks, and full historical regression/source-package parity.
07 / FAQ
Questions to answer before editing.
These answers are generated from the Tool record and current runtime state rather than generic compatibility promises.
Is PS1 VGS to Raw MCR Memory Card Migrator ready to use?
The Tool record is verified and declares an operational runtime. The page enables its input controls only when the declared engine module is loaded in the current build.
Does processing stay in the browser?
Yes for this declared mode. The loaded runtime processes the explicit input in the browser; Tool-specific privacy notes describe the exact scope and limits.
Should I keep the original file?
Yes. Keep an untouched source file until any generated output has been validated.
What if my input is rejected?
Use the validation message to correct the base, encoding, width, timezone, byte alignment, or size. The runtime does not guess through invalid input.
Related tools
Continue with the same tool family.
Only index-ready verified records from the same Tool Family are shown here.
Related guides
Read the guidance connected to this tool.
Only reviewed, index-ready Guides that explicitly reference this Tool are included.
Beginner
Backups & Safety
PlayStation 1 Memory Card Image Backup & Identification Guide
A safety-first PlayStation 1 Memory Card Image guide for identifying the intended representation, preserving an untouched source copy, and choosing only a verified compatible Tool.
Beginner
Save File Formats
PlayStation 1 Memory Card Image Integrity & Troubleshooting Guide
A fail-closed PlayStation 1 Memory Card Image troubleshooting guide for distinguishing representation problems from unsupported semantics and for selecting read-only integrity checks before any repair attempt.