privacyguides.org/i18n/zh-Hant/meta/uploading-images.md

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---
title: Uploading Images
---
Here are a couple of general rules for contributing to Privacy Guides:
## Images
- We **prefer** SVG images, but if those do not exist we can use PNG images
Company logos have canvas size of:
- 128x128px
- 384x128px
## Optimization
### PNG
Use the [OptiPNG](https://sourceforge.net/projects/optipng/) to optimize the PNG image:
```bash
optipng -o7 file.png
```
### SVG
#### Inkscape
[Scour](https://github.com/scour-project/scour) all SVG images.
In Inkscape:
1. File Save As..
2. Set type to Optimized SVG (*.svg)
In the **Options** tab:
- **Number of significant digits for coordinates** > **5**
- [x] Turn on **Shorten color values**
- [x] Turn on **Convert CSS attributes to XML attributes**
- [x] Turn on **Collapse groups**
- [x] Turn on **Create groups for similar attributes**
- [ ] Turn off **Keep editor data**
- [ ] Turn off **Keep unreferenced definitions**
- [x] Turn on **Work around renderer bugs**
In the **SVG Output** tab under **Document options**:
- [ ] Turn off **Remove the XML declaration**
- [x] Turn on **Remove metadata**
- [x] Turn on **Remove comments**
- [x] Turn on **Embeded raster images**
- [x] Turn on **Enable viewboxing**
In the **SVG Output** under **Pretty-printing**:
- [ ] Turn off **Format output with line-breaks and indentation**
- **Indentation characters** > Select **Space**
- **Depth of indentation** > **1**
- [ ] Turn off **Strip the "xml:space" attribute from the root SVG element**
In the **IDs** tab:
- [x] Turn on **Remove unused IDs**
- [ ] Turn off **Shorten IDs**
- **Prefix shortened IDs with** > `leave blank`
- [x] Turn on **Preserve manually created IDs not ending with digits**
- **Preserve the following IDs** > `leave blank`
- **Preserve IDs starting with** > `leave blank`
#### CLI
The same can be achieved with the [Scour](https://github.com/scour-project/scour) command:
```bash
scour --set-precision=5 \
--create-groups \
--renderer-workaround \
--remove-descriptive-elements \
--enable-comment-stripping \
--enable-viewboxing \
--indent=space \
--nindent=1 \
--no-line-breaks \
--enable-id-stripping \
--protect-ids-noninkscape \
input.svg output.svg
```