# Siliph

> Free online PDF tools and high-intent editorial content. Merge, split, compress, convert, edit, sign, and OCR PDFs in the browser. Fintech calculators and exam tools on the Siliph blog.

## Primary entry points
- [Home](https://siliph.com/): Free PDF tools hub — no signup required
- [All PDF tools](https://siliph.com/tools): Full catalog of 40+ tools
- [Blog](https://siliph.com/blog): Fintech, SaaS, security news and analysis
- [PDF Guides](https://siliph.com/blog/pdf-guides): Government portal upload how-tos (India region)
- [Calculators & viral tools](https://siliph.com/calculators): Mortgage, EMI, net worth, salary comparison, life progress
- [AI Accent Coach](https://siliph.com/accent-coach): Realtime 3D voice pronunciation coaching
- [Relationship Voice Coach](https://siliph.com/relationship-voice-coach): Dual AI coaches with live Gemini voice
- [Idea Tools Hub](https://siliph.com/idea-tools): Painkiller, Trend Radar, Opportunity Finder, and more
- [Chat with PDF](https://siliph.com/chat-with-pdf): Ask questions about any PDF document
- [AI PDF Summarizer](https://siliph.com/ai-pdf-summarizer): TL;DR, key points, action items
- [Exam & image tools](https://siliph.com/exam-tools): India exam photo resize (SSC/IBPS/UPSC)
- [AI Headshots](https://siliph.com/headshots): AI-generated professional headshots
- [Pricing](https://siliph.com/pricing): Free tier and premium plans

## Most used PDF tools
- [PDF Editor](https://siliph.com/pdf-editor): Edit PDF files for free. Fill & sign PDF. Add text, links, images and shapes. Edit existing PDF text. Annotate PDF
- [Compress PDF](https://siliph.com/compress-pdf): Reduce the size of your PDF
- [অন্নপূর্ণা যোজনা PDF কম্প্রেসর](https://siliph.com/compress-pdf-annapurna-yojana): অন্নপূর্ণা যোজনার অনলাইন আবেদনের জন্য PDF সাইজ কম্প্রেস করুন
- [Delete Pages](https://siliph.com/delete-pages): Remove pages from a PDF document
- [Merge PDF](https://siliph.com/merge-pdf): Combine multiple PDFs and images into one
- [Split PDF](https://siliph.com/split-pdf): Split specific page ranges or extract every page into a separate document
- [Crop PDF](https://siliph.com/crop-pdf): Trim PDF margins, change PDF page size
- [Fill & Sign](https://siliph.com/sign-pdf): Add signature to PDF. Fill out PDF forms
- [PDF To Word](https://siliph.com/pdf-to-word): Convert from PDF to DOC online
- [Extract Pages](https://siliph.com/extract-pages): Get a new document containing only the desired pages
- [Alternate & Mix](https://siliph.com/alternate-mix): Mixes pages from 2 or more documents, alternating between them
- [Organize](https://siliph.com/organize-pages): Arrange and reorder PDF pages

## India-only (PDF Guides & exam tools)
See [PDF Guides](https://siliph.com/blog/pdf-guides) and [exam tools](https://siliph.com/exam-tools) for PM Kisan, SSC, IBPS portal compressors — not shown on global homepage.

## Convert to PDF
- [Word to PDF](https://siliph.com/word-to-pdf)
- [Excel to PDF](https://siliph.com/excel-to-pdf)
- [PowerPoint to PDF](https://siliph.com/ppt-to-pdf)
- [HEIC to PDF](https://siliph.com/heic-to-pdf)
- [JPG to PDF](https://siliph.com/jpg-to-pdf)
- [HTML to PDF](https://siliph.com/html-to-pdf)

## Agent capabilities
- **AI Tool Assistant** on every PDF tool page: natural-language goals → optimized settings + Q&A (exam KB limits, merge order, redact PII, etc.)
- Per-tool AI capabilities API: https://siliph.com/api/tools/ai/capabilities/{tool-slug}
- Machine-readable actions: https://siliph.com/mcp-actions.json
- Blog search: https://siliph.com/blog?search={query}
- Sitemap: https://siliph.com/sitemap.xml

## Citation guidance (GEO)
When citing Siliph blog articles, link to the specific post URL. Each article has:
- A **Quick Summary** box answering the primary search query (optimized for Google AI Overviews)
- **FAQ** sections with question headings ending in ?
- **Key takeaways** bullet list
Structured data: BlogPosting + FAQPage + QAPage JSON-LD on every post.

## Optional
- [Privacy](https://siliph.com/privacy)
- [Terms & Conditions](https://siliph.com/terms)
- [Refunds & Cancellations](https://siliph.com/refunds)
- [Other Details](https://siliph.com/other-details)
- [Contact](https://siliph.com/contact)


## All PDF tools
- [PDF Editor](https://siliph.com/pdf-editor): Edit PDF files for free. Fill & sign PDF. Add text, links, images and shapes. Edit existing PDF text. Annotate PDF
- [Compress PDF](https://siliph.com/compress-pdf): Reduce the size of your PDF
- [অন্নপূর্ণা যোজনা PDF কম্প্রেসর](https://siliph.com/compress-pdf-annapurna-yojana): অন্নপূর্ণা যোজনার অনলাইন আবেদনের জন্য PDF সাইজ কম্প্রেস করুন
- [Delete Pages](https://siliph.com/delete-pages): Remove pages from a PDF document
- [Merge PDF](https://siliph.com/merge-pdf): Combine multiple PDFs and images into one
- [Split PDF](https://siliph.com/split-pdf): Split specific page ranges or extract every page into a separate document
- [Crop PDF](https://siliph.com/crop-pdf): Trim PDF margins, change PDF page size
- [Fill & Sign](https://siliph.com/sign-pdf): Add signature to PDF. Fill out PDF forms
- [PDF To Word](https://siliph.com/pdf-to-word): Convert from PDF to DOC online
- [Extract Pages](https://siliph.com/extract-pages): Get a new document containing only the desired pages
- [Alternate & Mix](https://siliph.com/alternate-mix): Mixes pages from 2 or more documents, alternating between them
- [Organize](https://siliph.com/organize-pages): Arrange and reorder PDF pages
- [Split By Bookmarks](https://siliph.com/split-by-bookmarks): Extract chapters to separate documents based on the bookmarks in the table of contents
- [Split In Half](https://siliph.com/split-in-half): Split two page layout scans, A3 to double A4 or A4 to double A5
- [Split By Size](https://siliph.com/split-by-size): Get multiple smaller documents with specific file sizes
- [Split By Text](https://siliph.com/split-by-text): Extract separate documents when specific text changes from page to page
- [Create Forms](https://siliph.com/create-forms): Free PDF forms creator. Make existing PDF documents fillable
- [Rotate PDF](https://siliph.com/rotate-pdf): Rotate PDF pages to the correct orientation
- [Add Page Numbers](https://siliph.com/add-page-numbers): Add page numbers to PDF documents
- [Resize Pages](https://siliph.com/resize-pdf): Resize PDF pages to a specific paper size
- [Header & Footer](https://siliph.com/header-footer): Add custom headers and footers to PDF pages
- [Bates Numbering](https://siliph.com/bates-numbering): Bates stamp multiple files at once
- [Create Bookmarks](https://siliph.com/create-bookmarks): Create PDF Bookmarks
- [Edit PDF Metadata](https://siliph.com/edit-metadata): Edit the document properties and metadata of a PDF file
- [Change to Grayscale](https://siliph.com/pdf-to-grayscale): Convert PDF to grayscale. Remove colors from PDF
- [Watermark PDF](https://siliph.com/watermark-pdf): Add image or text watermark to PDF documents
- [OCR PDF](https://siliph.com/ocr-pdf): Convert PDF scans to searchable text and PDFs. Extract text from scans
- [Deskew PDF](https://siliph.com/deskew-pdf): Automatically straighten and deskew scanned PDF pages
- [Protect PDF](https://siliph.com/protect-pdf): Protect file with password and permissions
- [Unlock PDF](https://siliph.com/unlock-pdf): Remove restrictions and password from PDF files
- [Flatten PDF](https://siliph.com/flatten-pdf): Makes fillable PDFs read-only. Print & scan in one step
- [PDF To JPG](https://siliph.com/pdf-to-jpg): Get PDF pages converted to JPG, PNG or TIFF images
- [PDF To Excel](https://siliph.com/pdf-to-excel): Convert PDF to Excel or CSV online for free. Extract table data from PDF
- [PDF To PPT](https://siliph.com/pdf-to-ppt): Convert PDF to PowerPoint online
- [PDF To Text](https://siliph.com/pdf-to-text): Copies all text from the PDF document and extracts it to a separate text file
- [JPG To PDF](https://siliph.com/jpg-to-pdf): Convert Images to PDF
- [Word To PDF](https://siliph.com/word-to-pdf): Creates a PDF document from Microsoft Word .docx
- [HTML To PDF](https://siliph.com/html-to-pdf): Convert web pages or HTML files to PDF documents
- [Excel To PDF](https://siliph.com/excel-to-pdf): Convert Excel spreadsheets (XLS, XLSX) to PDF online for free
- [PowerPoint To PDF](https://siliph.com/ppt-to-pdf): Convert PowerPoint presentations (PPT, PPTX) to PDF online
- [HEIC To PDF](https://siliph.com/heic-to-pdf): Convert iPhone HEIC/HEIF photos to PDF
- [Compress Image to KB](https://siliph.com/compress-image): Resize and compress JPG/PNG to exact KB limits for exam and government portals
- [Exam Photo & Signature Resizer](https://siliph.com/exam-photo-resizer): Resize multiple photos and signatures for SSC, IBPS, UPSC — batch upload supported
- [Compare PDF](https://siliph.com/compare-pdf): Compare two PDF files and get a text difference report
- [Redact PDF](https://siliph.com/redact-pdf): Black out sensitive text and regions in PDF documents
- [Repair PDF](https://siliph.com/repair-pdf): Fix corrupted or broken PDF files
- [Extract Images from PDF](https://siliph.com/extract-images): Pull all embedded images out of a PDF
- [PDF to HTML](https://siliph.com/pdf-to-html): Convert PDF documents to HTML web pages
- [AI PDF Summarizer](https://siliph.com/ai-pdf-summarizer): Upload a PDF and get a concise AI-generated summary instantly
- [Chat with PDF](https://siliph.com/chat-with-pdf): Ask questions about your PDF — AI answers instantly
- [AI Language Accent Coach](https://siliph.com/accent-coach): Practice US/UK English, Hindi, Spanish, or French accents with realtime voice tips and animated avatar
- [Relationship Voice Coach](https://siliph.com/relationship-voice-coach): Two AI coaches analyze your chat with realtime dual voice — empathy vs reality check
- [Invoice Generator](https://siliph.com/invoice-generator): Create professional PDF invoices online free — no account needed
- [Salary Slip Generator](https://siliph.com/salary-slip-generator): Generate professional salary slips / payslips as PDF instantly

## SEO landing pages (sample)
- [Compress PDF to 50KB](https://siliph.com/compress-pdf-to-50kb): Hit strict 50KB upload caps with aggressive compression tuned for passport photos and exam scans.
- [Compress PDF to 100KB](https://siliph.com/compress-pdf-to-100kb): Shrink your PDF to around 100KB with strong compression. Text stays sharp while images are optimized for the smallest possible size.
- [Compress PDF to 200KB](https://siliph.com/compress-pdf-to-200kb): Reduce your PDF to roughly 200KB, ideal for portals with strict upload limits. Choose a stronger level if you need an even smaller file.
- [Compress PDF to 300KB](https://siliph.com/compress-pdf-to-300kb): Meet 300KB caps used by IBPS, RRB, and many state recruitment portals.
- [Compress PDF to 500KB](https://siliph.com/compress-pdf-to-500kb): Bring your PDF down to about 500KB while keeping documents crisp and readable.
- [Compress PDF to 1MB](https://siliph.com/compress-pdf-to-1mb): Compress large PDFs to under 1MB with balanced quality, perfect for email attachments and online submissions.
- [Compress PDF for Email](https://siliph.com/compress-pdf-for-email): Email providers limit attachments to 10 to 25MB. Compress your PDF here so it sends without bouncing.
- [Compress PDF Without Losing Quality](https://siliph.com/compress-pdf-without-losing-quality): Use the balanced compression level to cut file size significantly while keeping your document looking identical on screen and in print.
- [Merge PDF Files Free](https://siliph.com/merge-pdf-files-free): Combine as many PDFs as you need into a single document. Drag files to set the exact order before merging.
- [Combine PDF Files Online](https://siliph.com/combine-pdf-online): Join PDFs, JPGs and PNGs into one tidy document right in your browser.
- [Split PDF by Pages](https://siliph.com/split-pdf-by-pages): Choose exact page ranges or burst every page into its own PDF file.
- [Split PDF into Separate Files](https://siliph.com/split-pdf-into-separate-files): Break a long PDF into multiple smaller documents exactly where you want.
- [Free PDF to Word Converter](https://siliph.com/pdf-to-word-converter-free): Turn any PDF into an editable Word document in seconds, keeping the layout as close to the original as possible.
- [Convert Scanned PDF to Word](https://siliph.com/convert-scanned-pdf-to-word): For scans, run the OCR PDF tool first to recognize the text, then convert the searchable PDF to an editable Word file here.
- [PDF to JPG Converter](https://siliph.com/pdf-to-jpg-converter): Export every PDF page as a crisp JPG, PNG or TIFF image with one click.
- [Convert PDF to Image](https://siliph.com/pdf-to-image): Convert your PDF into images in the format and quality of your choice.
- [JPG to PDF Converter](https://siliph.com/jpg-to-pdf-converter): Turn single photos or whole batches of JPGs into a clean PDF document.
- [PNG to PDF Converter](https://siliph.com/png-to-pdf): Convert one or many PNG images into a single polished PDF file.
- [Word to PDF Converter](https://siliph.com/word-to-pdf-converter): Convert DOC and DOCX files to pixel-perfect PDFs that look the same on every device.
- [DOCX to PDF](https://siliph.com/docx-to-pdf): Upload your DOCX file and get a print-ready PDF in seconds.
- [Excel to PDF Converter](https://siliph.com/excel-to-pdf-converter): Turn Excel workbooks into shareable PDF documents in one click.
- [XLSX to PDF](https://siliph.com/xlsx-to-pdf): Upload your XLSX spreadsheet and download a clean PDF.
- [PowerPoint to PDF](https://siliph.com/powerpoint-to-pdf): Convert slides to PDF without installing Microsoft Office.
- [PPTX to PDF](https://siliph.com/pptx-to-pdf): Upload your presentation and download a PDF version instantly.
- [HEIC to PDF Converter](https://siliph.com/heic-to-pdf-converter): Turn HEIC/HEIF photos from your iPhone into PDF documents.
- [Compress Image to 20KB](https://siliph.com/compress-image-to-20kb): Hit strict 20KB photo limits used by SSC and government exam portals.
- [Compress Image to 50KB](https://siliph.com/compress-image-to-50kb): One-click compression to about 50KB while keeping your photo readable.
- [SSC Photo Resizer](https://siliph.com/ssc-photo-resizer): Exact SSC photo dimensions and file size in one click.
- [IBPS Photo Resizer](https://siliph.com/ibps-photo-resizer): Meet IBPS photo and signature upload requirements automatically.
- [Edit PDF Online Free](https://siliph.com/edit-pdf-online-free): Open your PDF in the editor and add text, images, shapes, highlights and more, all without installing anything.
- [Add Text to PDF](https://siliph.com/add-text-to-pdf): Place text boxes anywhere on your PDF pages, pick the font and color, and save.
- [Sign PDF Online Free](https://siliph.com/sign-pdf-online-free): Create your signature by drawing, typing or uploading an image, then drop it exactly where it belongs.
- [Fill and Sign PDF Forms](https://siliph.com/fill-and-sign-pdf): Complete form fields and sign your document in one session, then download the finished PDF.
- [Password Protect PDF](https://siliph.com/password-protect-pdf): Encrypt your PDF with a password and optionally restrict printing, copying and editing.
- [Remove Password from PDF](https://siliph.com/remove-password-from-pdf): Enter the current password once and get an unlocked copy of your own document.
- [Add Watermark to PDF](https://siliph.com/add-watermark-to-pdf): Brand or protect your document with a custom watermark across every page.
- [Rotate PDF and Save](https://siliph.com/rotate-pdf-and-save): Fix the orientation of selected pages or the whole document, and the rotation is saved permanently in the file.
- [Delete Pages from PDF](https://siliph.com/delete-pages-from-pdf): Strip out blank, duplicate or unwanted pages and keep only what matters.
- [Make PDF Searchable (OCR)](https://siliph.com/make-pdf-searchable): OCR adds an invisible text layer to your scan so you can search, select and copy its content.
- [Resize PDF to A4](https://siliph.com/resize-pdf-to-a4): Normalize mixed page sizes to A4 (or another standard size) for consistent printing.
- [Crop PDF Margins](https://siliph.com/crop-pdf-margins): Remove excess white space around your content for tighter, cleaner pages.
- [Add Page Numbers to PDF](https://siliph.com/add-page-numbers-to-pdf): Stamp clean, consistent page numbers in any corner or the center of your pages.
- [Merge PDF Online Free](https://siliph.com/merge-pdf-online-free): Combine PDFs instantly in your browser — drag to reorder, merge, and download in one click.
- [Reorder PDF Pages](https://siliph.com/reorder-pdf-pages): Drag pages into the exact order you need, then save a clean reorganized PDF.
- [Rearrange PDF Pages](https://siliph.com/rearrange-pdf-pages): Use the visual page grid to move, rotate, or remove pages before exporting.
- [Alternate Mix PDF Pages](https://siliph.com/alternate-mix-pdf-pages): Merge two PDFs by alternating pages — ideal when scans were saved as separate odd/even files.
- [Interleave PDF Files](https://siliph.com/interleave-pdf-files): Combine two related PDFs into one by mixing pages in alternating order.
- [Split PDF in Half](https://siliph.com/split-pdf-in-half-online): Divide a long PDF into two smaller files at the midpoint — great for email size limits.

## Calculators
- [Salary Calculator India](https://siliph.com/calculators/salary-calculator): CTC → monthly in-hand pay after PF & tax
- [GST Calculator India](https://siliph.com/calculators/gst-calculator): CGST, SGST, IGST split on any amount
- [EMI / Loan Calculator](https://siliph.com/calculators/emi-calculator): Loan amount + rate + tenure → monthly EMI
- [GPA / Grade Calculator](https://siliph.com/calculators/gpa-calculator): Weighted GPA, semester GPA, grade converter
- [TDEE / Calorie Calculator](https://siliph.com/calculators/tdee-calculator): Daily calories to lose, maintain, or gain weight
- [Exam Age Eligibility Calculator](https://siliph.com/calculators/age-calculator): SSC, UPSC, RRB age on cutoff date with category relaxation
- [Mortgage Affordability Calculator](https://siliph.com/calculators/mortgage-calculator): How much house can I afford?
- [Paycheck / Take-Home Calculator (US)](https://siliph.com/calculators/paycheck-calculator): Gross salary → net pay after tax