Render

Drop an image on the stage

PNG, JPEG, GIF, WebP, BMP, SVG or TIFF, up to 20 MB. Nothing is uploaded — every pixel is read and converted in this browser.

Or paste one straight in.

Your ramp, right now 

                                

                            

                        


                        

                            
Grid
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Chars
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Render
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Glyph density calibration

                                

                                    Character density calibration chart is available as an interactive visual display.
                                    
                                

                                Ink per glyph in the current set, measured by 32×32
                                    rasterisation and sorted light→dark. A ramp that is not
                                    monotonic bands a smooth gradient.
                            


                            

                                
Character frequency

                                

                                    Character frequency histogram is available as an interactive visual display.
                                    
                                

                                How often each character appears in the latest output. A spike
                                    at one end means gamma or contrast is crushing the mid-tones.
                            


                            

                                
Top character distribution

                                

                                    Character frequency donut chart is available as an interactive visual display.
                                    
                                

                                The twelve most frequent characters, with the remainder grouped
                                    as one slice.
                            


                            

                                
Sobel edge field

                                

                                    Sobel edge detection preview is available as an interactive visual display.
                                    
                                

                                Gradient magnitude of the source. Bright means a strong edge;
                                    where this is dark, the edge weight has nothing to bite on.
                            


                            

                                
Sampling comparison

                                

                                    Sampling method comparison is available as an interactive visual display.
                                    
                                

                                The same source through area averaging, bilinear and point
                                    sampling. Point aliases on fine detail; area averaging costs a
                                    summed-area table.
                            


                            

                                
Render timeline

                                

                                    Render performance timeline graph is available as an interactive visual display.
                                    
                                

                                Render time for the last hundred renders. This is where Live
                                    preview stops keeping up with the sliders.
                            


                        

                    


                

            



            
            

                


                    

                    

                        
Measure all sets to fill this table.

                    


                

            



            
            

                


                    

                    

                        


                            

                                
TXTPlain

                                
The grid as plain text, one line per row. What you paste into a
                                    README, a commit message or a terminal.

                                
                            


                            

                                
PNGRaster

                                
Rasterised at the output font and size, on the chosen background.
                                    Fixed pixels — nothing reflows.

                                
                            


                            

                                
SVGVector

                                
One text element per row, so the characters stay selectable and
                                    the art scales without resampling.

                                
                            


                            

                                
HTMLColour

                                
A standalone page with per-character colour spans. The only export
                                    that keeps colour mode intact.

                                
                            


                            

                                
JSONReproducible

                                
The grid, the ramp and every setting that produced it —
                                    enough to reproduce this render exactly.

                                
                            


                            

                                
CSVMeasurements

                                
Character frequency and density per glyph, for when the analysis
                                    belongs in a spreadsheet rather than a chart.

                                
                            


                            

                                
ANSITerminal

                                
Truecolor escape codes — the only way plain text carries
                                    colour. cat it in a terminal and the picture is
                                    there. Needs colour switched on.

                                
                                
                            


                        


                        
Batch results

                        
Enter one line per row and render to fill this table.