I have searched for any existing and/or related issues.
I have searched for any existing and/or related discussions.
I am using the latest version of Open WebUI.
Installation Method
Git Clone
Open WebUI Version
v0.6.29
Ollama Version (if applicable)
No response
Operating System
Ubuntu 22.04
Browser (if applicable)
No response
Confirmation
I have read and followed all instructions in README.md.
I am using the latest version of both Open WebUI and Ollama.
I have included the browser console logs.
I have included the Docker container logs.
I have provided every relevant configuration, setting, and environment variable used in my setup.
I have clearly listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc).
I have documented step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation. My steps:
Start with the initial platform/version/OS and dependencies used,
Specify exact install/launch/configure commands,
List URLs visited, user input (incl. example values/emails/passwords if needed),
Describe all options and toggles enabled or changed,
Include any files or environmental changes,
Identify the expected and actual result at each stage,
Ensure any reasonably skilled user can follow and hit the same issue.
Expected Behavior
Plots should render normally without dumping the base64 image data to stdout.
Actual Behavior
When running Python code snippets that generate plots with Matplotlib, the console (stdout) is flooded with very large base64-encoded image strings (e.g., data:image/png;base64,…).
This output is extremely verbose and makes it difficult to view or scroll to the actual plot results. Instead of a clean plot render, users see pages of base64 data in the console.
Steps to Reproduce
Start Openwebui
Ask a query that generates a plot using matplotlib
Logs & Screenshots
Identified code that needs to be fixed.
Additional Information
No response
Originally created by @david-hung on GitHub (Sep 18, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/17568
### Check Existing Issues
- [x] I have searched for any existing and/or related issues.
- [x] I have searched for any existing and/or related discussions.
- [x] I am using the latest version of Open WebUI.
### Installation Method
Git Clone
### Open WebUI Version
v0.6.29
### Ollama Version (if applicable)
_No response_
### Operating System
Ubuntu 22.04
### Browser (if applicable)
_No response_
### Confirmation
- [x] I have read and followed all instructions in `README.md`.
- [x] I am using the latest version of **both** Open WebUI and Ollama.
- [x] I have included the browser console logs.
- [x] I have included the Docker container logs.
- [x] I have **provided every relevant configuration, setting, and environment variable used in my setup.**
- [x] I have clearly **listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup** (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc).
- [x] I have documented **step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation**. My steps:
- Start with the initial platform/version/OS and dependencies used,
- Specify exact install/launch/configure commands,
- List URLs visited, user input (incl. example values/emails/passwords if needed),
- Describe all options and toggles enabled or changed,
- Include any files or environmental changes,
- Identify the expected and actual result at each stage,
- Ensure any reasonably skilled user can follow and hit the same issue.
### Expected Behavior
Plots should render normally without dumping the base64 image data to stdout.
### Actual Behavior
When running Python code snippets that generate plots with Matplotlib, the console (stdout) is flooded with very large base64-encoded image strings (e.g., data:image/png;base64,…).
This output is extremely verbose and makes it difficult to view or scroll to the actual plot results. Instead of a clean plot render, users see pages of base64 data in the console.
### Steps to Reproduce
1. Start Openwebui
2. Ask a query that generates a plot using matplotlib
### Logs & Screenshots
<img width="719" height="290" alt="Image" src="https://github.com/user-attachments/assets/6538a7ea-33b6-4fa0-a015-ddda57a93a66" />
<img width="720" height="376" alt="Image" src="https://github.com/user-attachments/assets/a2731fe1-5687-48ba-8492-3299060a40ca" />
Identified code that needs to be fixed.
<img width="1218" height="279" alt="Image" src="https://github.com/user-attachments/assets/89874b4a-3cda-4363-a821-7b51336ecbc3" />
### Additional Information
_No response_
GiteaMirror
added the bug label 2026-05-15 13:55:20 -05:00
I did see this problem in v0.6.28 but I found fixed after installing v0.6.30.
<!-- gh-comment-id:3315060732 -->
@man2004 commented on GitHub (Sep 20, 2025):
I did see this problem in v0.6.28 but I found fixed after installing v0.6.30.
Blocking a user prevents them from interacting with repositories, such as opening or commenting on pull requests or issues. Learn more about blocking a user.
Originally created by @david-hung on GitHub (Sep 18, 2025).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/17568
Check Existing Issues
Installation Method
Git Clone
Open WebUI Version
v0.6.29
Ollama Version (if applicable)
No response
Operating System
Ubuntu 22.04
Browser (if applicable)
No response
Confirmation
README.md.Expected Behavior
Plots should render normally without dumping the base64 image data to stdout.
Actual Behavior
When running Python code snippets that generate plots with Matplotlib, the console (stdout) is flooded with very large base64-encoded image strings (e.g., data:image/png;base64,…).
This output is extremely verbose and makes it difficult to view or scroll to the actual plot results. Instead of a clean plot render, users see pages of base64 data in the console.
Steps to Reproduce
Logs & Screenshots
Identified code that needs to be fixed.
Additional Information
No response
@man2004 commented on GitHub (Sep 20, 2025):
I did see this problem in v0.6.28 but I found fixed after installing v0.6.30.
@david-hung commented on GitHub (Sep 20, 2025):
@man2004 Oh I see. I'll close my issue and PR request then.