# Aperi'Solve
[](https://aperisolve.com/)
[](https://inventory.raw.pm/tools.html#Aperi'Solve)
<p align="center">
<a href="https://www.aperisolve.com">
<img src="https://raw.githubusercontent.com/Zeecka/AperiSolve/main/examples/screenshot.png" alt="Aperi'Solve screenshot" />
</a>
</p>
Try it now: **https://www.aperisolve.com**
Support Aperi'Solve:
<a href="https://github.com/sponsors/Zeecka">
<img src="https://img.shields.io/badge/Sponsor-Zeecka-ea4aaa?logo=githubsponsors&logoColor=white&style=for-the-badge" alt="Sponsor Aperi'Solve on GitHub" />
</a>
---
Aperi'Solve is an open-source steganalysis web platform that performs automated analysis on images to detect and extract hidden data using common steganography tools and techniques.
## Key features
- Visualize each bit layer (LSB and other layers) per image channel (R/G/B/Alpha).
- Color remapping (random palette remaps with 8 generated variants)
- Runs 16 analyzers in parallel and displays their output, with per-tool
success/no-result badges and one-click download of extracted files:
- [binwalk](https://github.com/ReFirmLabs/binwalk) (embedded archives)
- [exiftool](https://exiftool.org/) (metadata and geolocation)
- [file](https://manned.org/file.1) (MIME type and format detection)
- [GraphicsMagick identify](http://www.graphicsmagick.org/identify.html) (image info & properties)
- [foremost](https://foremost.sourceforge.net/) (carved files)
- [jsteg](https://github.com/lukechampine/jsteg) (JPEG LSB extraction)
- [jpseek / jphide](https://github.com/h3xx/jphs) (JPEG steganography extraction, with password)
- [openstego](https://www.openstego.com/) (extraction with password)
- [outguess](https://www.rbcafe.com/software/outguess/) (extraction with password, deep analysis)
- [pcrt](https://github.com/sherlly/PCRT) (PNG check & repair)
- [pngcheck](https://www.libpng.org/pub/png/apps/pngcheck.html)
- [steghide](https://steghide.sourceforge.net/) (extraction with password)
- [strings](https://pubs.opengroup.org/onlinepubs/9799919799/utilities/strings.html)
- [zsteg](https://github.com/zed-0xff/zsteg) (LSB text/data extraction)
- **In-app wiki** ([`/wiki`](https://www.aperisolve.com/wiki/)): a HackTricks-style
steganography handbook — a triage methodology, a decision-tree cheatsheet,
technique pages per medium (image, audio, text, files), and a guide per
analyzer, all authored as Markdown.
- **Internationalization**: UI available in English, French, Spanish, German,
Russian, Chinese and Portuguese under language-prefixed URLs (`/fr/`, `/es/`, …).
- Worker queue architecture for offloading heavy/slow analyzers (Redis + background workers).
- Content-addressed result cache, HTTP caching, and per-endpoint rate limiting.
- Results stored temporarily for later browsing and download, then cleaned up
automatically by a scheduled job.
## Adding an analyzer
Adding an analyzer is a single file: subclass `SubprocessAnalyzer`, set a few
class attributes (`name`, `has_archive`, `needs_password`, `deep_only`,
`display_order`), and install the tool in the `Dockerfile`. The worker run
list, download allow-list, and frontend order are all derived automatically.
See [docs/adding-analyzer.md](docs/adding-analyzer.md).
## Quick start (Docker)
In case you want to host your own version of https://www.aperisolve.com/.
> Required: Docker + Docker Compose.
```bash
git clone https://github.com/Zeecka/AperiSolve.git
cd AperiSolve
cp .env.example .env
docker compose up -d
```
Then browse url: http://localhost:5000/
Ads and analytics are disabled by default; every integration
(`CUSTOM_EXTERNAL_SCRIPT`, `GOOGLE_ADS_TXT`, `SITE_BASE_URL`, Sentry) is
opt-in via environment variables documented in [`.env.example`](.env.example).
The app never injects ad markup itself: `CUSTOM_EXTERNAL_SCRIPT` loads the
AdSense script and placement is left to Auto ads.
## Architecture
The stack runs as Docker Compose services:
- **web** — Flask app served by gunicorn (Jinja templates + vanilla JS frontend).
- **worker** — an RQ worker that runs the analyzers for each submission,
fanning out to one thread per tool.
- **cron** — an RQ cron scheduler that runs the retention cleanup off the
request path.
- **initdb** — a one-shot service that creates the tables and pre-fills the
IHDR CRC recovery database.
- **postgres** — stores image metadata and submission status.
- **redis** — RQ broker (DB 0) and rate-limiter storage (DB 1).
- **rqdashboard** — queue monitoring, bound to localhost:9181.
This separation keeps heavy tools (binwalk, foremost, zsteg, etc.) isolated
and avoids blocking the web worker. Identical submissions are deduplicated by
a content hash, and derived images are cached with long-lived immutable HTTP
headers, so repeat traffic is cheap.
## Documentation
- [docs/adding-analyzer.md](docs/adding-analyzer.md) — add a new analyzer.
- [docs/deploy.md](docs/deploy.md) — the tag-driven production deploy flow.
- [CONTRIBUTING.md](CONTRIBUTING.md) — dev setup, tests, wiki pages, and translations.
## Testing
```bash
uv sync --extra dev
uv run pytest -q # unit tests (no services needed)
# end-to-end analyzer tests through the running app:
docker compose -f compose.dev.yml up -d
uv run pytest tests/test_webapp_analyzers.py -v
```
## Roadmap
See [Issues](../../issues).
## Contributing
See [CONTRIBUTING.md](CONTRIBUTING.md).
## Security
> [!WARNING]
> If you discover a security issue, please report it privately to the repository owner instead of opening a public issue.
## Credits
Thanks to donors:
- [Philip Zimmermann](https://github.com/Philip-Zimmermann)
- [Ed Guillory](#)
- [Silje Hollås](#)
Thanks to contributors:
- [Zeecka](https://www.zeecka.fr/) - **(author)**
- [aradhyacp](https://github.com/aradhyacp)
- [Philip Zimmermann](https://github.com/Philip-Zimmermann)
- [abneeeees](https://github.com/abneeeees)
Thanks to the open-source community:
[binwalk](https://github.com/ReFirmLabs/binwalk), [exiftool](https://exiftool.org/), [GraphicsMagick identify](http://www.graphicsmagick.org/identify.html), [foremost](https://foremost.sourceforge.net/), [jsteg](https://github.com/lukechampine/jsteg), [jphide/jpseek](https://github.com/h3xx/jphs), [openstego](https://www.openstego.com/), [outguess](https://www.rbcafe.com/software/outguess/), [pcrt](https://github.com/sherlly/PCRT), [pngcheck](https://www.libpng.org/pub/png/apps/pngcheck.html), [steghide](https://steghide.sourceforge.net/), [strings](https://pubs.opengroup.org/onlinepubs/9799919799/utilities/strings.html), [zsteg](https://github.com/zed-0xff/zsteg), ...
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