KB-first compression
We tune quality until your file lands inside the min–max KB window — not just “smaller”.
SizeToKB.in · Free · Private
Reduce image & signature size to the exact KB your form needs
Compress photo to 20KB / 50KB / 100KB, signature to 10–20KB, plus PDF to JPG, unlock PDF, merge & compress — for SSC, UPSC, NEET, Railway, IBPS and more.
On-device processing Free · no signup Custom always available
Start here
Quick wins — high-intent tools
- Compress to 50KBHotMost searched form photo limit
- Compress to 20KBHotStrict portal photo / sign size
- Compress to 100KBUPSC / NEET style uploads
- PDF to JPGNewHuge search demand — pages → images
- Unlock PDFNewRemove PDF password online free
- JPG to PDFHotConvert images to PDF free
- Size kam kaise kareHindi guide → exact KB tools
- Signature 10–20KBClean & compress for SSC / Bank
Exact KB tool
Set min / max KB and resize here
No need to open another page — upload, resize, download.
Settings
All tools
Reduce size to KB & more — pick a tool
Everything stays in your browser. Start with reduce-to-KB, or open photo, PDF and convert helpers below.
Reduce size to KB
- Custom reduce to KBDedicated custom min–max KB page
- Reduce image sizeCompress photo to 20 / 50 / 100 KB
- Compress to 50KBMost searched form photo limit
- Compress to 20KBStrict portal photo / sign size
- Compress to 100KBUPSC / NEET style uploads
- Reduce signature sizeClean ink and hit 10–20 KB
- Exam photo + sign packReduce both to KB, one ZIP
- Bulk reduce to KBMany photos → one ZIP
- Form photo wizardPreset packs for portals
- Upload error fixerPaste error → exact KB fix
- Reduce PAN photoPAN card photo to KB
- Reduce Aadhaar photoUIDAI-style photo to KB
- Thumb impressionClean & reduce to 10–40 KB
Photo & signature
PDF tools
- Compress PDFShrink PDF toward target KB
- Marksheet PDF shrink200 / 500 KB presets
- Reorder PDF pagesDelete / reorder then shrink
- Edit PDFText, highlight, draw, images
- Merge PDFCombine certificates into one
- Split PDFExtract pages from a PDF
- JPG to PDFImages → PDF (huge search demand)
- PDF to JPGPDF pages → JPG / PNG
- Unlock PDFRemove PDF password
Convert & edit
More helpers
- Watermark FOR UPLOADStamp photo or PDF safely
- Photo guidelines checkBrightness, blur, framing tips
- Size kam kaise kareHindi SEO guide + tools
- Signature size kam kareHindi guide → 10–20KB
- PDF size kam kareHindi guide → compress PDF
- Check photo sizePixels, KB, print estimate
- Mask ID numbersBlur Aadhaar before sharing
Always available
Custom — set your own min / max KB
No exam match? Use the tool on this page — exact size rules from your notification.
Or pick an exam preset
193 profiles with photo / signature KB targets
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- Custom size to KBUse tool ↑
- Bihar Police BPSSC SI (Daroga)Open
- IIT BHU Non-TeachingOpen
- RRB Section ControllerOpen
- ITATOpen
- Railway NFR ApprenticeOpen
- IBPS ClerkOpen
- Patna High Court AssistantOpen
- CATOpen
- MPPSC ADPO
- UP Cooperative Bank (UPCISB)
- UP LT Grade Assistant Teacher Mains
- SSB Head Constable / SI /ASI
- SSB Head Constable Medical Cader
- PNB LBO
- Indian Navy Agniveer MR Musician
- BPSC Civil Judge (Bihar Judiciary Judge)
- JEECUP (UP Polytechnic)
- Patna High Court Technical Assistant
- SSC Phase 14
- BTSC Laboratory Assistant
- UPSSSC VPO
- NTPC Assistant Executive
- CDS
- SSC Stenographer Grade 'C' and 'D'
- CRPF Tradesman
- JTET
- NDA
- CTET
- Coal India MT
- RRB ALP
- UPSSSC AGTA
- AFCAT
- Allahabad High Court RO / ARO / CA
- SSC CGL
- Haryana High Court Clerk
- MPPSC Assistant Professor
- Indian Navy Agniveer INET
- Haryana HSSC Group C Various Post
- RPSC RAS Pre
- AIIMS CRE
Why SizeToKB
Built around the kilobyte, not a generic resize slider
Exam portals reject files by KB. SizeToKB is shaped for that constraint — presets when you know the exam, Custom when you only have the notification PDF.
Stays on your device
Photos and signatures are processed in the browser. Nothing is uploaded for resizing.
Custom when presets miss
Notification says 15–40 KB? Open Custom and type it. Custom is always pinned on the home page.
Exam shortcuts
One-tap presets for popular recruitments so you skip guessing dimensions and ranges.
Signature clean-up
Optional high-contrast pass for ink-on-paper signatures before they hit the KB target.
PDF helpers
Merge photos into a PDF or slim an existing PDF when the portal caps document size.
Frequently Asked Questions
Open Compress to 50KB (or use Reduce to KB on this homepage): upload your photo and download when the output is at or under 50KB.
Reduce image size & signature size online free (KB)
Millions of aspirants in India search for ways to reduce image size, reduce photo size online free, and reduce signature size in KB before uploading to sarkari and entrance exam portals. SizeToKB is built for that exact job: compress your JPG until it fits 20KB, 50KB, 100KB — or any min–max range from your notification — without installing an app.
How to reduce photo size for online form fill
Pick your exam preset or open Custom. Upload the photo, then download when the tool shows your file inside the allowed KB window. Common targets: reduce photo size to 50KB, reduce photo size to 20KB, compress image to 100KB, change photo size in KB for SSC / UPSC / NEET / Railway / IBPS uploads. Also covers photo size kam kaise kare and image size reduce online free searches.
How to reduce signature size for SSC, Bank & Railway
Portals often reject signatures outside 10KB–20KB. Use SizeToKB to reduce signature size online, compress signature to 10KB or 20KB, and optionally apply a high-contrast clean-up so ink stays readable. Useful for SSC CGL / CHSL / MTS / GD signature size, IBPS signature size, RRB signature size, and anyone searching signature size kam kaise kare or how to reduce signature size for SSC.
Popular KB targets aspirants type
- compress image to 50kb
- compress image to 20kb
- compress image to 100kb
- photo size kam kaise kare
- pdf to jpg
- unlock pdf / remove password
- reduce image size in KB
- reduce image size for online form
- resize photo to 20kb 50kb
- resize signature to 10kb 20kb
- JPG compressor online free
- passport size photo maker
- SSC photo size & signature size
- UPSC photo size
- NEET / JEE photo size
- Railway RRB NTPC photo size
- IBPS / SBI clerk photo size
- decrease image size online
- make photo smaller KB
- photo for online application
- sarkari form photo size
Reduce image size & reduce signature size online free (KB)
People search compress image to 50KB, compress image to 20KB, reduce photo size to 50KB, photo size kam kaise kare, signature size kam kaise kare, PDF to JPG, unlock PDF, jpg to pdf, and merge PDF. SizeToKB is built for those exact jobs.
Also: compress PDF, HEIC to JPG, Word to PDF, and exam photo packs — always verify the latest official notification.