How do I merge PDF files online for free without signup?

Go to tools.arkaserve.com/merge-pdf, drag and drop your PDF files, reorder them if needed, and click Merge. Download the combined PDF instantly — completely free with no signup, no watermark, and no email required. Works on mobile too.

How do I compress a PDF to reduce its size below 1MB?

Go to tools.arkaserve.com/compress-pdf, upload your PDF, select High compression, and download the smaller file. Most image-heavy PDFs reduce by 60–85%, easily bringing a 4MB file under 1MB. Free, no signup, no watermark.

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Go to tools.arkaserve.com/pdf-to-word, upload your PDF file, and click Convert. You get an editable Word (.docx) document instantly — completely free with no signup, no email, and no watermark required.

Can I convert PDF to Excel (XLSX) online for free?

Yes. Go to tools.arkaserve.com/pdf-to-excel, upload your PDF, and the tool automatically detects and extracts tables into an editable Excel spreadsheet. Free with no signup or watermark.

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Go to tools.arkaserve.com/jpg-to-pdf in any mobile browser, tap to upload your photos, arrange the pages in order, and download the PDF — all from your phone. No app needed, completely free with no watermark.

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Yes. Files are processed securely and automatically deleted from the server within 1 hour of upload. Several tools (PDF editor, image compressor, HEIC converter, hash generator) process files entirely in your browser — your files never leave your device.

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Number Base Converter Online Free -- Binary, Decimal, Hex

Number Base Converter Online Free — Binary, Decimal, HexConvert numbers between binary, decimal, octal, and hexadecimal formats online for free. See all base conversions simultaneously. Free number base.How to use Number Base Converter — step by step

Enter a number in any base — Type a number in the decimal (base 10), binary (base 2), octal (base 8), or hexadecimal (base 16) field. Common uses for students: converting decimal to binary for a computer science assignment, converting hex color codes to decimal RGB values, understanding memory addresses in assembly or C programs, solving number system problems in GATE or competitive exams, or checking binary/hex conversions for digital electronics labs.

See all bases simultaneously — All four representations update instantly as you type. Enter 255 in decimal and immediately see: binary = 11111111, octal = 377, hexadecimal = FF. Enter FF in hex and see decimal = 255. All bases update simultaneously so you can cross-check without switching fields.

Copy any value — Click the copy button next to any base representation to grab that value. Completely free, no signup. Supports integers up to 64-bit range using JavaScript BigInt for precision.

Frequently asked questionsHow do I convert decimal to binary online free?Enter your decimal number at tools.arkaserve.com/number-base and the binary equivalent appears instantly. Example: 255 decimal = 11111111 binary. 10 decimal = 1010 binary. 256 decimal = 100000000 binary. All four bases (binary, octal, decimal, hexadecimal) show simultaneously, so you can verify all conversions at once. Completely free, no signup.How do I convert hexadecimal to decimal or binary?Enter the hex value (e.g., FF, 1A3, or 0xFF) in the hexadecimal field and decimal, binary, and octal equivalents appear instantly. Hex FF = decimal 255 = binary 11111111. Hex 1A = decimal 26 = binary 11010. This is useful for HTML color codes (#FF6B35 = RGB 255, 107, 53), memory address analysis, bit manipulation, and digital electronics problems.What are binary, octal, decimal, and hexadecimal used for in computing?Binary (base 2) is the native language of computers — all data is stored as 0s and 1s. Octal (base 8) was used in older Unix file permissions (chmod 755 = binary 111 101 101). Decimal (base 10) is the human-readable number system. Hexadecimal (base 16) is a compact representation of binary: 4 bits = 1 hex digit, making it ideal for memory addresses (0x7FFFFFFF), RGB colors (#FF6B35), CPU registers, and byte values in debugging.