Antimatter Dimensions Save Editor Online
Inspect your Antimatter Dimensions save string, create a clean backup, store recovery copies in your browser, and edit legacy JSON saves without sending your progress to a server.
Best use cases
- Back up a browser save before experimenting.
- Check whether a save string looks valid.
- Edit old plain JSON or base64 JSON exports.
- Keep dated local recovery copies.
Paste Your Save String
Save Summary
| Next step | Analyze a save first. |
|---|
Legacy JSON Editor
Local Backup Vault
How to Use the Antimatter Dimensions Save Editor
Follow this order to reduce the chance of losing progress.
Export your current save
Open Antimatter Dimensions, use the export option, and copy the full save string before making changes.
Create a clean backup
Paste the save here, analyze it, then download and store a local backup. Keep one untouched copy.
Edit only supported saves
If the tool decodes legacy JSON, make small edits and export again. Avoid changing unknown fields.
Import and verify
Import the edited string into the game, check that progress loads correctly, then keep the backup.
What This Tool Can Safely Do
- Detect whether a save is modern, base64 JSON, or raw JSON.
- Show readable fields for legacy JSON saves.
- Export edited legacy saves in the same basic format.
- Download timestamped backups as text files.
- Keep short-term browser backups in local storage.
Limits and Safety Notes
- Modern compressed saves are analyzed and backed up, not rewritten here.
- Unsupported edits can make a save fail to import.
- Browser local storage can be cleared by privacy tools.
- Use the official game import screen to test any edited output.
- This is an unofficial fan tool and is not affiliated with Hevipelle or Makopaz.
Save Formats This Page Handles
Antimatter Dimensions has changed over time, so one save editor should not treat every export the same way.
| Detected save type | What the page does | Best next step |
|---|---|---|
| Modern Antimatter Dimensions save | Recognizes the official export marker, reports length, and lets you download or store a backup. | Keep the backup untouched. Use a modern-compatible editor only if you fully understand the edit. |
| Legacy base64 JSON save | Decodes the save into JSON, shows readable top-level fields, and can export edited JSON back to base64. | Change one small value at a time, export, then test import in the game before making more edits. |
| Raw JSON save | Displays formatted JSON and allows direct JSON editing with syntax validation before export. | Use this mainly for old backups, experiments, or debugging. Do not edit unknown fields in bulk. |
| Unknown or partial text | Blocks editing and recommends checking whether the full exported save was copied. | Return to the game, export again, and make sure no characters were omitted from the beginning or end. |
Backup Workflow
Use the save editor as a recovery checkpoint before you change anything. Export from the game, paste the string here, download a timestamped text file, and store a local browser copy. The downloaded file is the safer long-term backup because browser storage can be cleared by privacy tools, account cleanup, or a fresh browser profile.
A good habit is to keep one untouched backup for each major milestone: first Infinity, first Eternity, first Reality, and any point before experimenting with a save editor.
Editing Workflow
For editable legacy saves, the safest method is to make one small change, export the result, then import it into the game to confirm it still loads. Avoid editing arrays, version fields, challenge state, or automation state unless you know exactly what the field controls.
If a value uses scientific notation or a Decimal-like object, preserve the same shape. Changing the structure can break import even when the JSON itself is valid.
Transfer Workflow
When moving Antimatter Dimensions progress between devices, export on the source device first and paste the string into a text file. Then import on the target device and verify that currencies, achievements, challenges, and automation settings look correct.
Do not delete the original browser profile or old app data until the imported save has been tested during actual gameplay.
Common Import Problems
| Problem | Likely cause | Fix |
|---|---|---|
| The game rejects the save. | The export string is incomplete, has extra spaces, or was rewritten in an unsupported format. | Restore the untouched backup, export again, and avoid editing modern compressed saves on this page. |
| JSON export fails. | The edited JSON has a missing comma, quote, bracket, or brace. | Use the error message as a clue, undo the last edit, and export only after the JSON parses. |
| Progress loads but values look wrong. | A number, array, or nested object was changed in a way the game does not expect. | Revert to the backup and repeat the edit with one field at a time. |
| Local backups disappeared. | Browser local storage was cleared or the page was opened in another browser profile. | Use downloaded `.txt` backups for permanent recovery, not only the browser vault. |
What Not to Edit Blindly
Some fields affect more than they appear to. Challenge completion state, automator state, achievement arrays, celestial progress, and version markers can depend on other fields. Changing only one related value may create a save that imports but behaves incorrectly later.
For practical testing, keep edits boring: duplicate the original save, change one obvious numeric value, import, check the game, then decide whether to continue.
If the save belongs to a long-running main account, treat the save editor as a backup and inspection tool first. Use a separate test save for aggressive edits.
Antimatter Dimensions Save Editor FAQ
Can I edit every Antimatter Dimensions save with this online save editor?
This page safely inspects and backs up modern save strings, and it can edit saves that decode to plain JSON or legacy base64 JSON. Modern compressed saves should be backed up before using a full external editor.
Where is my Antimatter Dimensions save stored?
Web saves are stored locally in your browser storage. Exporting a save string gives you a portable backup that can be imported into another browser or device.
Should I back up my save before editing it?
Yes. Always keep an untouched copy of your original save string before changing any values. A bad edit can make a save fail to import.
What should I do if import fails?
Restore your untouched backup first. Then try smaller edits, check for accidental missing brackets in JSON, and avoid changing fields whose purpose is unclear.
Why does the tool say my Antimatter Dimensions save is not editable here?
Current Antimatter Dimensions exports may use a modern compressed format. This page detects and backs up those saves, but does not rewrite them because unsupported rewriting can corrupt progress.
Can I transfer an Antimatter Dimensions save between browser, Steam, and Android?
In many cases, exported save strings can be used to move progress between supported versions. Always keep a backup from the source device and test the import before deleting the old copy.
Is this Antimatter Dimensions save editor safe to use?
The tool runs client-side in your browser and does not upload pasted save text. The main risk is user editing error, so the safest workflow is backup first, edit slowly, and test imports with a copy.
Does the local backup vault replace downloaded backups?
No. The vault is convenient for short-term recovery in the same browser, but downloaded text backups are better for long-term storage, device transfers, and protection against browser data cleanup.