Alat Online Gratis
Cepat, Privasi Utama, di Browser
1153+ alat untuk pengembang, desainer, dan tugas sehari-hari. Sebagian besar alat berjalan di browser Anda — data Anda tetap di perangkat Anda. Beberapa alat memerlukan layanan eksternal.
Alat Populer
Base64 Encode & Decode
Encode and decode Base64 with UTF-8 support. Instant, private, browser-based. No upload, no signup.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case and kebab-case.
Hash Generator
Generate SHA-256, SHA-1, SHA-512 and SHA-384 hashes from any text. Uses Web Crypto API, fully private.
Pemformat JSON
Format, percantik dan validasi JSON secara instan di peramban Anda. Tanpa unggah, sepenuhnya pribadi.
JWT Decoder
Decode JWT tokens and inspect the header and payload. See the decoded JSON content instantly.
Password Generator
Generate strong, random passwords with customizable length and character sets. Uses crypto.getRandomValues.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports ISO 8601 format.
URL Encode & Decode
Encode and decode URL (percent-encoding) with UTF-8 support. Instant, private, browser-based. No upload, no signup.
UUID Generator
Generate random UUIDs (v4) instantly in your browser. No upload, fully private.
Color Picker
Pick colors and get HEX, RGB, and HSL values in your browser. Free, online, no upload, fully private.
Image Compressor
Compress images in your browser to reduce file size. Adjust quality and download the optimized image. Free, private, no upload.
Image Resizer
Resize images in your browser. Set custom dimensions or maintain aspect ratio. Download the resized image.
JSON validator
JSON validator online gratis. Memproses data secara instan di peramban Anda. Tanpa unggah, tanpa daftar, sepenuhnya pribadi.
Regex Tester
Test regular expressions against any text in real-time. See all matches instantly with match count.
Text Diff Checker
Compare two pieces of text and see the differences highlighted. Added and removed lines are color-coded.
Word Counter
Count words, characters, sentences and paragraphs in your text instantly. No upload, fully private.
Jelajahi berdasarkan Kategori
Alat warna
Alat warna: konversi HEX, RGB, HSL, CMYK, pemilih warna, generator palet dan pemeriksa kontras. Semua berjalan secara pribadi di peramban Anda. Gratis, tanpa daftar.
Alat kriptografi dan encoding
Base64, encoding/decoding URL, AES, hex, JWT dan konversi encoding.
Alat jaringan
Alat jaringan: pencarian IP, kueri DNS, WHOIS, pemeriksaan SSL, header HTTP dan diagnostik ketersediaan URL. Utilitas online gratis, tanpa daftar.
Alat keamanan
Alat keamanan: generator kata sandi, pemeriksa hash, pemeriksa entropi dan utilitas keamanan lainnya. Semua berjalan secara pribadi di peramban Anda. Gratis, tanpa daftar.
Koleksi Unggulan
Kumpulan alat untuk alur kerja umum — pilih koleksi untuk memulai tugas Anda.
Esensial Pengembang
JSON, regex, JWT, hash dan Base64 — toolkit pengembang harian.
Pemformat JSON
Format, percantik dan validasi JSON secara instan di peramban Anda. Tanpa unggah, sepenuhnya pribadi.
JSON validator
JSON validator online gratis. Memproses data secara instan di peramban Anda. Tanpa unggah, tanpa daftar, sepenuhnya pribadi.
Regex Tester
Test regular expressions against any text in real-time. See all matches instantly with match count.
JWT Decoder
Decode JWT tokens and inspect the header and payload. See the decoded JSON content instantly.
Hash Generator
Generate SHA-256, SHA-1, SHA-512 and SHA-384 hashes from any text. Uses Web Crypto API, fully private.
Alat Gambar
Kompres, ubah ukuran, konversi dan pilih warna dari gambar.
Image Compressor
Compress images in your browser to reduce file size. Adjust quality and download the optimized image. Free, private, no upload.
Image Resizer
Resize images in your browser. Set custom dimensions or maintain aspect ratio. Download the resized image.
Color Picker
Pick colors and get HEX, RGB, and HSL values in your browser. Free, online, no upload, fully private.
Color Converter
Convert colors between HEX, RGB and HSL instantly in your browser. No upload, fully private.
Alat PDF
Gabung, pisah, kompres dan ekstrak teks dari dokumen PDF.
Penggabung PDF
Gabungkan beberapa file PDF menjadi satu dokumen. Gratis, berbasis peramban, tanpa unggah — file Anda tetap pribadi.
PDF Splitter
Split a PDF into multiple files by page range or every N pages. Free, browser-based, no uploads — your file stays private.
PDF Compressor
Free online pdf compressor. Process data instantly in your browser. No upload, no signup, fully private.
PDF to Text Converter
Extract text content from PDF files in your browser. Free, online, no upload, fully private.
Teks & Konten
Hitung, ubah, bandingkan dan konversi konten teks.
Word Counter
Count words, characters, sentences and paragraphs in your text instantly. No upload, fully private.
Character Counter
Count characters, words, sentences, and paragraphs in your text. Free, online, no upload, fully private.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case and kebab-case.
Text Diff Checker
Compare two pieces of text and see the differences highlighted. Added and removed lines are color-coded.
Markdown to HTML
Markdown to HTML online gratis. Memproses data secara instan di peramban Anda. Tanpa unggah, tanpa daftar, sepenuhnya pribadi.
Generator
UUID, kata sandi, timestamp dan teks placeholder.
UUID Generator
Generate random UUIDs (v4) instantly in your browser. No upload, fully private.
Password Generator
Generate strong, random passwords with customizable length and character sets. Uses crypto.getRandomValues.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports ISO 8601 format.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text with customizable paragraph count. Perfect for mockups and testing.
Keamanan & Kripto
Hash, kata sandi, JWT dan Base64 untuk pekerjaan keamanan.
Hash Generator
Generate SHA-256, SHA-1, SHA-512 and SHA-384 hashes from any text. Uses Web Crypto API, fully private.
Password Generator
Generate strong, random passwords with customizable length and character sets. Uses crypto.getRandomValues.
JWT Decoder
Decode JWT tokens and inspect the header and payload. See the decoded JSON content instantly.
Kalkulator
Matematika sehari-hari: persentase, usia, BMI dan pinjaman.
Percentage Calculator
Calculate percentages easily. Find what is X% of Y, or what percentage X is of Y.
Age Calculator
Calculate exact age in years, months, and days from a birth date. Also shows total days lived.
BMI Calculator
Calculate your Body Mass Index (BMI) in metric or imperial units. See your weight category instantly.
Loan Calculator
Calculate monthly loan payments, total interest, and total cost. Supports any loan amount and interest rate.
Panduan & Tutorial
Pelajari cara kerja setiap alat — panduan praktis, lembar contekan dan penjelasan.
Algoritma Hash Dijelaskan: MD5, SHA-1, SHA-256, SHA-512
Understand cryptographic hash functions: differences between MD5, SHA-1, SHA-256, and SHA-512, and which to use for integrity checks vs password storage.
ReferensiLembar Contekan Ekspresi Reguler: Sintaks, Flag, dan Pola Umum
Complete regex reference: metacharacters, character classes, quantifiers, anchors, groups, flags, and ready-to-use patterns for emails, URLs, and dates.
Pemecahan MasalahKeamanan Kata Sandi: Cara Membuat, Menyimpan, dan Mengaudit Kata Sandi yang Kuat
Solve the most common password security problems: generating strong passwords, hashing them correctly, avoiding reuse, and auditing existing credentials.
PerbandinganBase64 vs Encoding Hex: Mana yang Sebaiknya Anda Gunakan?
Compare Base64 and Hex encoding across efficiency, readability, use cases, and trade-offs — and learn when to pick each for binary-to-text encoding.
PerbandinganCSV vs TSV: Format Pemisah Mana yang Sebaiknya Anda Gunakan?
Compare CSV and TSV across delimiter choice, escaping, compatibility, and use cases — and learn when to pick each for tabular data.
Cara MelakukanCara Compress Images Without Losing Quality
Step-by-step guide to compressing images (JPEG, PNG, WebP) to reduce file size without visible quality loss using a free browser-based tool.
Cara MelakukanCara Compress PDF Files Step by Step
Step-by-step guide to compressing PDF files to reduce file size using a free browser-based tool. Learn compression levels and what affects PDF size.
Cara MelakukanCara Convert Colors Between HEX, RGB, and HSL
Step-by-step guide to converting colors between HEX, RGB, HSL, and other formats using a free browser-based tool. Learn when to use each format.
Perpustakaan Referensi
Tabel referensi dan lembar contekan — sintaks JSON, status HTTP, tipe MIME, dan lainnya.
Referensi sintaks JSON
Referensi lengkap sintaks JSON (RFC 8259) dengan tipe data, aturan tata bahasa, contoh dan kesalahan umum.
Lembar contekan ekspresi reguler
Referensi cepat sintaks ekspresi reguler termasuk karakter, kuantifier, jangkar, grup dan pola umum.
Referensi kode status HTTP
Referensi lengkap kode status HTTP dengan deskripsi, kategori dan contoh penggunaan.
Referensi tipe MIME
Tipe MIME umum (tipe media Internet) dengan ekstensi file dan deskripsi.
Referensi entitas HTML
Entitas karakter HTML umum dengan nama, kode desimal dan heksadesimal.
Referensi zona waktu IANA
Identifier zona waktu IANA dengan offset UTC dan deskripsi untuk 40 zona waktu umum di seluruh dunia.
Referensi warna bernama CSS
Semua warna bernama CSS dengan nilai hex dan RGB.
Referensi timestamp Unix
Referensi timestamp Unix dengan milestone umum, rentang nilai dan aturan konversi.
Privasi Utama, Gratis untuk Semua
100% Gratis
Tanpa pendaftaran, tanpa langganan, tanpa biaya tersembunyi. Semua alat gratis digunakan, selamanya.
Privasi Utama
Sebagian besar alat memproses data secara lokal di browser Anda. File Anda tidak pernah meninggalkan perangkat Anda.
Cepat & di Browser
Tanpa unduhan atau instalasi. Alat berjalan instan dengan Web API, Web Workers, dan WASM.
Perpustakaan Berkembang
1153+ alat dalam 17 kategori, dengan panduan dan referensi.