FILEMIGO / TOOLBOX
Free Diagram & UML Tools
Create flowcharts, UML class, sequence and ER diagrams. Start with templates, edit on a visual canvas and export SVG, PNG or PDF.
Choose your next task
Flowchart maker
Turn a process into a clear, downloadable flowchart.
UML class diagram
Model classes, attributes, methods and relationships.
Sequence diagram
Show how people and systems interact, step by step.
ER diagram
Map database entities, keys and cardinalities.
Drag & drop canvas
Create your own diagrams and layouts with shapes, text, images and arrows.
Start with a practical guide
Prepare a photo for a KB, pixel and format limit
A practical guide to meeting photo upload requirements: separate KB limits from pixel dimensions, choose JPG or PNG, crop carefully and verify the final file.
Choose the right PDF tool without losing useful features
Compare PDF merging, page extraction, compression, OCR and redaction. Learn which Filemigo operations rebuild pages as images and what to check before sharing.
Turn an LLM response into an editable diagram
Use Filemigo’s system prompt to generate diagram JSON, preview it and apply it to the canvas. Send existing diagrams back to an LLM while preserving connections.