Axis label overflow is one of the most common defects we see in exported charts. Long category names collide at 45-degree rotation, numeric ticks truncate against the plot boundary, and date labels pile up when the interval is too dense for the available width. Until now, these issues only surfaced after the PNG or PDF was already in a stakeholder inbox.
Starting today, the DataVizForge export preview runs a collision-detection pass on every axis before rendering. When two adjacent tick labels overlap by more than 2 pixels, or when a label extends beyond the chart bounding box, the preview highlights the offending labels in amber and suggests a fix: increase rotation to 60 or 90 degrees, switch to abbreviated month or unit names, or widen the tick interval. You can apply any suggestion with one click, or override manually.
The detection respects the final export dimensions, not the editor canvas, so what you see in the preview matches the delivered file exactly. This means a chart that looks fine at 1200 px wide will still flag overflow when you export at 600 px for a mobile email layout. The feature is available in all three site languages and works for bar, line, scatter, and combo chart types.