Developer: ChiPlot (ChiBioTools)
Supported platforms: Web browser (Windows, macOS, Linux, ChromeOS)
Access: https://www.chiplot.online/static/ChiBioTools/src/ab1_file.html
Features
View Quality scores
Yes. Displays per-base quality bars and numerical quality values on hover. Interactive quality-threshold trimming is not provided.
View raw data
No raw-channel display or raw data table export.
Assembly
No.
Input file formats
.ab1 (single-file upload via browser drag-and-drop).
Output file formats
Plain copied sequence text and FASTA-style clipboard output.
Trimming
No interactive quality trimming.
Integrated Blast
No.
Open multiple windows
No multi-trace pane; relies on separate browser tabs.
Edit bases
No interactive trace base-call editing.
ABI limits (regions outside of clear range region are displayed in gray)
No.
Other functions
- Three-section output layout (Summary, Peak figure, Sequence)
- Part of the broader ChiPlot web portal for scientific plotting and quick bioinformatics utilities
Cost
Free web utility (optional VIP account tiers exist on the broader ChiPlot platform).
Comments
ChiPlot’s ab1 viewer is frequently listed among free online Sanger utilities for quick .ab1 inspection and FASTA sequence extraction. Note that ChiPlot uploads the selected file to a remote analysis service (end-to-end backend availability was not tested in this review). For strictly client-side browser parsing without uploading files to external servers, tools such as ConductScience Chromatogram Viewer, Microcline, Teal, or FinchTV are strong alternatives.
Return to the Trace Viewers overview or check trace quality online with QualTrace III Online.