This read-only Tool requires both documented DSV fixed markers and a non-empty raw region. The raw .sav output is exactly source bytes 0 through the validated footer start. The 24 footer metadata bytes are neither interpreted nor regenerated, and the source DSV is never rewritten.
Emulator & Retro Tools
DeSmuME DSV Container Extractor
Validate the documented DeSmuME DSV footer prefix and terminal cookie, then extract only the exact raw save bytes preceding the footer.
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
.dsv
Platforms
Nintendo DS
Supported versions / editions
DeSmuME DSV savedata containers recognized by the existing strict DSV parser.
Input constraints
Non-empty file within 16 MiB; complete documented DSV footer prefix, 24-byte footer metadata region and terminal |-DESMUME SAVE-| cookie; non-empty raw region before the footer.
Known limitations
Read-only inspection/extraction only. No repair, padding, truncation, checksum regeneration, resigning, wrapper rewriting, game payload editing, metadata synthesis, or extension-only acceptance.
Output / result
Exact wrapper-free raw Nintendo DS save source range plus deterministic JSON 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 the .dsv file. SaveEditor validates the fixed footer/cookie and exposes exactly the bytes before that footer.
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 55 reads only the explicitly selected local wrapper/container in the browser. The container-intelligence-v1 runtime has no fetch, XMLHttpRequest, WebSocket, sendBeacon, FormData upload, server-side save processing, or telemetry path. The permanent 16 MiB per-file ceiling remains in force. The selected source is never modified, and successful payload extraction is restricted to a strictly validated exact source byte range.
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
Missing/truncated footer, wrong cookie, empty raw region, or oversize input is 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
Profiledesmume-dsv-container-extractor
Method notes
Verified with deterministic valid/invalid wrapper fixtures, exact payload-range equality checks, source immutability, malformed/truncated refusal, no-network static checks, independent reference reconstruction, 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 DeSmuME DSV Container Extractor 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.
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Only index-ready verified records from the same Tool Family are shown here.