What you will find here
Browse the Image, Design & File Tools tools available through Martzine. Each page is built around a defined task, with practical guidance on when to use it, what the output means and where the tool stops being enough.
How to use this category
Start with the task you need to complete rather than the name of a software feature. Open the closest tool, review its inputs and confirm the output matches the business decision or workflow you are working on.
When the same task keeps returning, use the related tools and resources to decide whether the process should stay manual, become automated or move into a larger application.
What makes a useful tool
A practical tool has a clear input, a predictable output and a defined owner for the next step. It should save work without making the process harder to understand.
Martzine keeps the surrounding business context visible so the tool remains part of the work rather than becoming another isolated utility.
TOOL LIBRARY
Image, Design & File Tools tools
Use the focused utilities below for recurring work in this area. Open a tool, review the workflow around it and keep the next action clear.
Tool
Color Picker
Expand a valid three-digit hexadecimal color to six digits, then convert each channel to an RGB integer.
Tool
Image Compressor
Create a JPEG export with the selected dimensions and quality. Compare file size and visible detail before using the result on a page.
Tool
Image Cropper
Produce a centred crop of the selected image. Keep a copy of the original and check whether the crop retains the subject you need.
Tool
Image Resizer
Resize a local image to the entered dimensions. A zero height preserves aspect ratio; inspect the exported image before replacing the original.
Tool
OG Image Previewer
Display the supplied Open Graph title, description and URL with title and description character counts.
Tool
Pixels to Inches
Inches × DPI = pixels; centimetres ÷ 2.54 × DPI = pixels. Reverse conversions divide pixels by DPI. DPI must be positive.
Tool
Social Media Image Size Checker
Compare the entered width and height with a stored dimension preset for the selected supported platform.
Tool
YouTube Thumbnail Downloader
Extract a video identifier from supported watch, short-link or Shorts URL patterns and construct thumbnail image addresses.
