KB-first compression
We tune quality until your file lands inside the min–max KB window — not just “smaller”.
Size to KB
sizetokb.in · Free · Private · No signup
Compress photo to 50KB, reduce signature size & PDF tools — exact kilobytes, in your browser
The toolkit that makes files fit: 20/50/100/200 KB photos, signature 10–20 KB, passport maker, PDF to JPG, compress & unlock PDF — nothing uploaded to our servers.
Also in हिंदी · தமிழ் · मराठी · ಕನ್ನಡ · తెలుగు
Private · nothing saved On-device · no upload Free · no signup
Generic tools · start here
Free tools people search every day
- PDF to JPG 50KBHotTop generic clicks · convert + KB cap
- Compress to 50 KBHotReduce photo size to 50KB free
- Size reducerHotReduce KB — any min–max band
- Reduce signature sizeHotCompress signature to 10–20 KB
- Compress to 200 KBImage compressor to 200KB
- JPG to PDF 50–100KBExact KB PDF from photos
- Reduce image size20 / 50 / 100 KB · custom KB
- Passport size photo3.5×4.5 cm maker online free
- Compress PDFReduce PDF size to KB online
- Unlock PDFRemove PDF password free
Why people use Size to KB
The free toolkit that makes files fit — by the kilobyte
Size to KB is built for one job: get a photo, signature or PDF under the exact size a form demands, without installing an app. That is the product. Exam presets are shortcuts on top of it.
Exact KB, not “smaller”
Portals reject by kilobyte. Size to KB tunes quality until your file lands inside the band you set — 20, 50, 100 KB or any custom range.
Private by design
Compression runs in your browser. Photos and signatures never leave your device. No account, no cloud copy, no waiting on a server.
One toolkit, every form
Compress photo, clean signature, make passport size, convert or unlock PDF — then reuse the same tools for SSC, Railway, Bank or any notification PDF.
Exact KB tool
Size reducer — set exact min–max KB
Searched “reduce kb” or “size reducer”? Crop → hit 20–50 KB (or any band) → Free Download.
Settings
Select or drag & drop imageThen crop & rotate · JPG, PNG, HEIC · Max 10 MB
How Size to KB works
Three steps — from oversized file to form-ready download
Size to KB is the product: compress image to 50KB, reduce signature size, passport photo maker, PDF to JPG, compress PDF. Exam presets are optional shortcuts when your notification matches a listed recruitment.
- 1. Pick a generic tool — Compress to 50KB, Signature cleaner, Passport photo, PDF to JPG, or browse all tools.
- 2. Crop, then compress — so bytes go to the face or ink, not empty background.
- 3. Free Download — then upload that JPG to the official form. Files stay on your device; we don’t save them.
Read more on About Size to KB · Privacy · Fix size reject errors.
All tools
Reduce size to KB & more — pick a tool
Everything stays in your browser. Search or jump a category — start with reduce-to-KB.
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Reduce size to KB
- Custom reduce to KBHotDedicated custom min–max KB page
- Reduce image sizeHotCompress photo to 20 / 50 / 100 KB
- Under 50 KBHotSize reducer — hit 20–50 KB band
- Compress to 20KBHotStrict portal photo / sign size
- Compress to 100KBHotUPSC / NEET style uploads
- Compress to 10KBHotTight signature / portal limit
- Compress to 200KBHotImage compressor to 200KB
- Compress to 500KBLarger scan / certificate max
- Increase size to KB/MBHotFile too small? Pad into min–max KB or ~1 MB
- Reduce signature sizeHotClean ink and hit 10–20 KB
- Exam photo + sign packReduce both to KB, one ZIP
- Bulk reduce to KBHotMany photos → one ZIP
- Form photo wizardHotPreset packs for portals
- Upload error fixerHotPaste 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
- Handwritten declarationHotIBPS/SBI 800×400 · 50–100 KB
- Join photo + signatureHotOne JPG for combined uploads
- Upload checkerHotKB + pixels preflight before submit
- Passport photo makerHot3.5×4.5 cm, crop, background, print
- White backgroundPlain wall → white for forms
- Crop photoCrop then reduce to KB
- Merge imagesJoin photos side by side
- Flip / rotateMirror or turn before upload
- Color to B&WGrayscale or pure black & white
- Name & date on photoHotStamp name + date on exam photo
PDF tools
- Compress PDFHotShrink PDF toward target KB
- Marksheet PDF shrinkHot200 / 500 KB presets
- Reorder PDF pagesDelete / reorder then shrink
- Edit PDFHotText, highlight, draw, images
- Merge PDFHotCombine certificates into one
- Split PDFExtract pages from a PDF
- JPG to PDFHotImages → PDF (huge search demand)
- JPG to PDF exact KBHot50–100 / 200 / 500 KB PDF bands
- PDF to JPG 50 KBHotConvert PDF → JPG under 50 KB
- Unlock PDFHotRemove PDF password
Convert & edit
More helpers
- Watermark FOR UPLOADStamp photo or PDF safely
- Photo guidelines checkBrightness, blur, framing tips
- Form upload guidesHotLong guides for PET, GDS, 50KB, SBI
- Size kam kaise kareHotHindi 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
- Biodata / resume makerHotSarkari biodata → print PDF
- Age as on dateHotExam cut-off age calculator
Open forms this week
Start with what people search this week
JEE Main 2027Forms · till 22 Nov · photo 10–200 KBKEA FDA / SDAForms · till 25 Nov · 5,431 postsRRB NTPC GradLast days · till 6 Nov · sign 30–49 KBRRB NTPC UGForms · till 13 Nov · 12th passPunjab Courts ClerkLast day · 4 Nov 4 PM · under 200 KBCRPF Sports QuotaForms · till 11 Nov · photo 20–50 KBSC SPAForms · till 10 Nov · photo 10–50 KBISRO SDSC SHARForms · till 9 Nov · photo 20–50 KB
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
230 profiles · open forms listed first · KB targets on each row
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- Custom size to KBUse tool ↑
- CRPF Sports Quota (HC/GD & CT/GD)Photo 20–50 · Sign 10–20 KBOpen
- ISRO SDSC SHAR (Tech / MTS)Photo 20–50 · Sign 10–20 KBOpen
- JEE MainsPhoto 10–200 · Sign 10–100 KBOpen
- KEA FDA / SDA (Karnataka Group C)Photo 20–200 · Sign 10–70 KBOpen
- Punjab District Courts Clerk (SSSC)Photo 20–200 · Sign 10–200 KBOpen
- Railway RRC NWR ApprenticePhoto 20–70 · Sign 20–30 KBOpen
- RRB NTPCSign 30–49 · Photo 20–50 KBOpen
- Supreme Court Court Master (Shorthand)Photo 80–200 · Sign 50–200 KBOpen
- Supreme Court Senior Personal AssistantPhoto 10–50 · Sign 10–20 KBOpen
Why Size to KB
Built around the kilobyte, not a generic resize slider
Forms reject files by KB. Size to KB is shaped for that constraint — compress photo, signature and PDF to the exact band you need, then use exam presets only when they help.
Stays on your device
Photos and signatures are processed in the browser. We don’t upload or save your files.
Custom when presets miss
Notification says 15–40 KB? Open Custom and type it. Custom is always pinned on the home page.
Signature clean-up
Optional high-contrast pass for ink-on-paper signatures before they hit the KB target.
PDF helpers
PDF to JPG, compress PDF, unlock PDF, JPG to PDF — when the portal caps document size.
Exam shortcuts on top
Optional one-tap presets for popular recruitments. The core product is still the generic KB toolkit.
Frequently Asked Questions
Size to KB is a free photo, signature and PDF size toolkit at sizetokb.in. Compress images to exact KB (20/50/100/200), reduce signature size, make passport photos, convert PDF to JPG, compress or unlock PDFs — privately in your browser.
Compress image, reduce signature size & PDF tools online free
Size to KB ranks for everyday utility searches — not only exam names. If you need to compress image to 50kb, reduce signature size online, pdf to jpg, compress pdf, passport size photo maker, or unlock pdf, use the dedicated free tools below. Files stay in your browser.
How to reduce photo size / compress image to KB
Open Compress to 50KB, 20KB, 100KB, or Reduce image size. Upload → crop → Free Download when the file hits your KB target. Also covers photo size kam kaise kare, size reducer online free, and reduce image size in KB.
How to reduce signature size to 10KB–20KB
Use Signature cleaner to reduce signature size online free, clean paper noise, and compress to 10–20 KB. Hindi: signature size kam kaise kare.
PDF & convert tools people search (high volume)
Free in-browser: PDF to JPG, JPG to PDF, Compress PDF, Unlock PDF, Merge PDF, PDF to Word, Word to PDF.
Top keywords → direct tool links
- compress image to 50kb
- compress image to 20kb
- compress image to 100kb
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- reduce signature size online
- passport size photo maker online free
- pdf to jpg online free
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- compress pdf online free
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- merge pdf online free
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- photo size kam kaise kare
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- white background photo maker
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- increase image size in kb
Compress to 50KB · Signature · Passport · PDF tools
Top generic searches we built for: compress image to 50kb / 20kb / 100kb / 200kb, reduce signature size online free (10–20 KB), passport size photo maker online free, pdf to jpg, jpg to pdf, compress pdf, unlock pdf, merge pdf, photo size kam kaise kare.
Best practice: one dedicated URL per intent (this site), H1 matching the search phrase, FAQ schema, internal links between KB / signature / PDF tools, and exam presets as secondary paths — not the only homepage story.
Open exam forms · JEE Main · KEA · NTPC · SCI SPA
Open now (early Nov 2026): JEE Main 2027 Session 1 till 22 Nov; KEA FDA/SDA till 25 Nov; RRB NTPC Graduate till 6 Nov · UG till 13 Nov; RRC NWR till 6 Nov; Punjab Courts Clerk last day 4 Nov; ISRO SDSC SHAR till 9 Nov; Supreme Court SPA till 10 Nov; CRPF Sports till 11 Nov; Court Master till 15 Nov. Closed: NIACL AO & SC JCA (28 Oct).
2027 prep: SSC GD & MTS, NDA/CDS I (~Dec 2026), CISF AC LDCE (~Nov–Dec), UPSC CSE (Jan–Feb 2027) — use the same generic KB tools above with exam presets.