100KB Extension v1.1.1: Compress & resize files in 0ms directly in Google Chrome
Learn how to remove background shadows, enhance ink contrast, scale to exact pixel dimensions, and join photo & signature vertically for official recruitment portals.
Clean shadows, increase ink-to-background contrast, and shrink signature & thumb impression file size under 10KB, 20KB, or 50KB ceilings without line distortion.
Stitch your passport photograph and signature vertically into a single image file (with clean spacing & border) matching state PSC portal requirements.
Automated screening software used by recruitment agencies (UPSC, SSC, IBPS, NTA, state public service commissions) automatically validates image dimensions, byte limits, and background uniformity. Over 40% of form rejections are caused by non-compliant signature files.
Photos taken with smartphones often have uneven paper shadows. Our client canvas thresholding converts grey paper tones into pure white (#FFFFFF).
Most portals require files between 10KB and 20KB. High-resolution phone photos (3MB–5MB) must be compressed while preserving line stroke clarity.
Stretching a wide signature into a square box makes it unreadable. Standard aspect ratios (3.5:1 width-to-height) maintain natural handwriting.
| Portal / Exam | Dimensions | File Size Cap | Ink Preference |
|---|---|---|---|
| UPSC (Civil Services) | 350 x 350 px min | 10KB – 20KB | Black ink on white paper |
| SSC (Staff Selection Commission) | 140 x 60 px (4.0 x 2.0 cm) | 10KB – 20KB | Black or dark blue ink |
| IBPS / State Bank (PO / Clerk) | 140 x 60 px | 10KB – 20KB | Black ink required |
| Left Thumb Impression | 240 x 240 px (3.0 x 3.0 cm) | 10KB – 20KB | Blue or black ink pad |
Your signatures and thumb impressions are sensitive identity credentials. Processing occurs locally in browser memory — no data is uploaded to external servers.