CasPINS: an integrated web-based platform for CRISPR/TALEN gRNA design, primer generation, and indel decomposition...

Genome editing researchers currently navigate multiple disconnected tools for guide RNA (gRNA) design, primer generation, and editing analysis-a fragmented workflow that introduces errors and limits reproducibility. CasPINS (Cas-Primer-Indel Suite) addresses this gap as an open-source, unified platform integrating the complete genome editing computational workflow into a single interactive web application accessible without programming expertise. The platform supports 90+ species, 14 CRISPR-Cas variants, TALEN design, and six editing modes. Primer design integrates with Ensembl and NCBI databases relative to cut sites, while indel quantification utilizes Non-Negative Least Squares (NNLS) decomposition of Sanger chromatograms with maximum signal extraction and $R^2$ -corrected conservative modes. Benchmarking demonstrates strong concordance with established tools, including a 68.8% recovery of CHOPCHOP gRNAs and 67.2% of CRISPOR gRNAs across five human benchmark genes, alongside an algorithmic agreement within 2.6 percentage points on gold-standard TIDE data. Ultimately, a step-count analysis shows that CasPINS significantly streamlines usability, reducing discrete user actions from 25 to 8 steps compared to the traditional sequential-tool pipeline.